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FOSSiBOT S3 Pro (20GB + 128GB) Review | 197 Data compared

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  • Avg. price: ~£150
  • RAM capacity: 20 GB
  • Internal storage: 128 GB
  • Screen size: 6.67 inches
  • Main camera megapixels: 64 MP & 2 MP

FOSSiBOT S3 Pro (20GB + 128GB) review. Compare 197 technical specifications and user reviews to see how it ranks among smartphones and if it's worth buying.

6.6

Overall score

What it is: An overall evaluation of the smartphone's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best smartphones on the market.

Score components:

90.0%

6.7

Technical Score

10.0%

5.9

User score

Good
6.7

Technical Score

What it is: An assessment of the smartphone's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

When it matters: When you want to compare smartphones based on technical performance and available features.

Score components:

25.0%

6.8

Performance & Hardware

18.0%

6.3

Camera

15.0%

7.2

Display

15.0%

6.9

Battery

10.0%

7.4

Software

10.0%

6.9

Connectivity

4.0%

3.0

Audio

3.0%

8.1

Design

Good
5.9

User score

What it is: A rating that combines user reviews and the total number of reviews received by the smartphone

When it matters: When you want to know how a smartphone handles daily tasks and how reliable it remains over time according to user feedback.

Score components:

70.0%

7.5

User reviews

30.0%

2.2

Popularity

User score:
amazon
3.6
(15)
amazon
5.0
(2)

(Reviews last updated: Mar 2026)

Good
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    Best prices

    Best rankings

    ?

    Available: ranking among products currently available (including other versions of this product).
    All: ranking among all products in the database.

    Technical Specifications of smartphone FOSSiBOT S3 Pro (20GB + 128GB)

    Technical Score

    What it is: An assessment of the smartphone's technical performance, covering eight key areas: performance & hardware, software, camera, connectivity, display, battery, audio, and design.

    When it matters: When you want to compare smartphones based on technical performance and available features.

    Score components:

    25.0%

    6.8

    Performance & Hardware

    18.0%

    6.3

    Camera

    15.0%

    7.2

    Display

    15.0%

    6.9

    Battery

    10.0%

    7.4

    Software

    10.0%

    6.9

    Connectivity

    4.0%

    3.0

    Audio

    3.0%

    8.1

    Design

    6.7
    FOSSiBOT S3 Pro (20GB + 128GB) has a technical score of 6.73 points, which is lower than 70.9% of smartphones.
    User score

    What it is: A rating that combines user reviews and the total number of reviews received by the smartphone

    When it matters: When you want to know how a smartphone handles daily tasks and how reliable it remains over time according to user feedback.

    Score components:

    70.0%

    7.5

    User reviews

    30.0%

    2.2

    Popularity

    User score:
    amazon
    3.6
    (15)
    amazon
    5.0
    (2)

    (Reviews last updated: Mar 2026)

    5.9
    FOSSiBOT S3 Pro (20GB + 128GB) has a user score of 5.92 points, which is lower than 97.8% of smartphones.
    Popularity
    What it is: An indicator based on the number of reviews received by the smartphone.
    When it matters: When you prefer to purchase a product chosen and reviewed by many other consumers.
    2.2
    FOSSiBOT S3 Pro (20GB + 128GB) has a popularity of 2.2 points, which is lower than 64.1% of smartphones.
    Ratio quality/price

    What it is: An indicator that combines the smartphone's overall rating with its cost.

    When it matters: When you are looking for a smartphone with a good balance between quality and price.

    Score components:

    60.0%

    6.6

    Overall score

    40.0%

    9.7

    Price

    7.9
    FOSSiBOT S3 Pro (20GB + 128GB) has a quality-to-price ratio of 7.9 points, which is higher than 43.9% of smartphones.
    Brand name
    What it is: The manufacturer or brand under which the smartphone is marketed and sold.
    When it matters: When you prefer a specific ecosystem, support network, or design philosophy.

    Importance: MEDIUM

    FOSSiBOT
    Processor model
    What it is: The central System-on-Chip (SoC) that houses the CPU, GPU, modem, and other core processing components.
    When it matters: When you want to know the specific engine powering your device's speed and features.

    Importance: HIGH

    MediaTek Helio G85
    FOSSiBOT S3 Pro (20GB + 128GB) uses the MediaTek Helio G85 processor model which is slower than processors in 89.3% of smartphones and equal to processors in 1.6% of smartphones.
    RAM capacity
    What it is: The amount of volatile memory available for running apps and multitasking.
    When it matters: When you use multiple apps at once or want smoother multitasking without reloads.

    Importance: HIGH

    Good value: >12 GB

    20 GB
    FOSSiBOT S3 Pro (20GB + 128GB) has a RAM capacity of 20 GB which is larger than the RAM capacity of 96% of smartphones and equal to that of 0.6% of smartphones.
    Internal storage
    What it is: The total built-in space available for apps, media, and files.
    When it matters: When you keep large libraries of photos, videos, and apps directly on your device.

    Importance: HIGH

    Good value: >256 GB

    128 GB
    FOSSiBOT S3 Pro (20GB + 128GB) has an internal storage capacity of 128 GB which is smaller than the storage of 61.2% of smartphones and equal to that of 28.4% of smartphones.
    CPU boost clock speed
    What it is: The maximum speed the processor can achieve temporarily under heavy load.
    When it matters: When you run demanding apps or games that require short bursts of peak performance.

    Importance: MEDIUM

    Good value: >3.2 GHz

    2.0 GHz
    The CPU boost clock speed of FOSSiBOT S3 Pro (20GB + 128GB) is 2.0 GHz which is lower than the boost speed of 84.6% of smartphones and equal to that of 8.3% of smartphones.
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    Operating system
    What it is: The primary system software that manages the smartphone's hardware and software resources.
    When it matters: When you have a preference for the user interface and app ecosystem.

    Importance: HIGH

    Android
    Android 14
    FOSSiBOT S3 Pro (20GB + 128GB) uses the Android operating system, which outperforms that of 1% of smartphones.
    Android 14
    Android version
    What it is: The specific generation number of the Android operating system installed on the device.
    When it matters: When you want to ensure app compatibility and access to the latest software features.

    Importance: LOW

    Android 14
    FOSSiBOT S3 Pro (20GB + 128GB) runs Android version Android 14 which is newer than that found in 49.5% of smartphones and equal to that in 21% of smartphones.
    Direct OS updates
    What it is: Indicates whether the device receives operating system updates directly from the manufacturer or Google, ensuring timely security and feature updates.
    When it matters: When you want the fastest access to new features and security patches.

    Importance: HIGH

    no
    FOSSiBOT S3 Pro (20GB + 128GB) does not receive direct OS updates. 20.5% of smartphones receive direct updates.
    Open-source OS
    What it is: Shows whether the device’s operating system is based on open-source code, allowing community contributions and greater transparency.
    When it matters: When you value transparency and potential community-driven modifications.

    Importance: LOW

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) uses an open-source OS. 94.6% of smartphones use an open-source OS.
    Dark mode
    What it is: A display option that uses dark backgrounds to reduce eye strain and save battery on OLED screens.
    When it matters: When you want to reduce eye strain at night or save battery on OLED screens.

    Importance: LOW

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) offers dark mode. 95.8% of smartphones support this feature.
    Show more
    Multi-lens main camera
    What it is: Indicates that the rear camera system includes multiple lenses (e.g., wide, ultra-wide, telephoto) for versatile shooting options.
    When it matters: When you want versatility to shoot wide landscapes, standard shots, and zoomed details.

    Importance: MEDIUM

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) includes a multi-lens main camera system. 93.7% of smartphones include multi-lens setups.
    Main camera megapixels
    What it is: The resolution of the primary rear camera sensor, measured in millions of pixels (MP). Higher megapixels can capture more detail.
    When it matters: When you want to capture high-resolution images that can be cropped or printed large.

    Importance: HIGH

    Good value: >50 MP

    64 MP & 2 MP
    FOSSiBOT S3 Pro (20GB + 128GB) has a main camera resolution of 64 MP & 2 MP MP which is higher than that of 75.5% of smartphones and equal to that of 1% of smartphones.
    Main camera aperture
    What it is: The size of the lens opening (f-stop) that controls light entry. A lower f-number indicates a wider aperture, allowing better low-light shots.
    When it matters: When you want better low-light performance or a natural background blur effect.

    Importance: HIGH

    f/1.89 & f/2.4 & f/2.0
    FOSSiBOT S3 Pro (20GB + 128GB) has a main camera aperture of f/1.89 & f/2.4 & f/2.0 which is narrower than that of 78.8% of smartphones of smartphones.
    Main camera sensor area
    What it is: The total physical surface area of the camera sensor (calculated by multiplying the number of megapixels by the square of the individual pixel size). A larger area captures more light, resulting in better night photos and less digital noise.
    When it matters: When you want to capture clear, detailed photos in low-light conditions with minimal grain and achieve a natural, professional-looking background blur for portraits.

    Importance: HIGH

    Good value: >60

    41 mm²
    FOSSiBOT S3 Pro (20GB + 128GB) has a main camera sensor area of 41 mm² which is larger than the main camera sensor area of 54.2% of smartphones and equal to that of 5.9% of smartphones.
    Main camera pixel size
    What it is: The physical size of individual pixels on the camera sensor, measured in micrometers. Larger pixels typically capture more light for better low-light performance.
    When it matters: When you shoot in low light and want reduced noise in your photos.

    Importance: MEDIUM

    Good value: ≥1.2 µm

    0.8 µm
    FOSSiBOT S3 Pro (20GB + 128GB) has a main camera pixel size of 0.8 µm which is larger than in 35.5% of smartphones and equal to the size in 21.9% of smartphones.
    Show more
    Number of SIM slots
    What it is: The number of physical SIM cards or eSIM profiles the device can support simultaneously.
    When it matters: When you need to manage two different phone numbers or travel internationally with a local SIM.

    Importance: MEDIUM

    Good value: ≥2

    2
    FOSSiBOT S3 Pro (20GB + 128GB) has 2 SIM slots, which is more than in 3.8% of smartphones and equal to the number in 96.1% of smartphones.
    Cellular module
    What it is: The hardware component capable of connecting to mobile cellular networks for voice and data.
    When it matters: When you need to stay connected to calls and internet away from Wi-Fi.

    Importance: LOW

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) includes a cellular module. 100% of smartphones include cellular modules.
    5G connectivity
    What it is: Support for the fifth generation of mobile network technology, offering significantly faster data speeds and lower latency.
    When it matters: When you need the fastest possible mobile data speeds for streaming and downloading on the go.

    Importance: MEDIUM

    no
    FOSSiBOT S3 Pro (20GB + 128GB) does not support 5G connectivity. 66.9% of smartphones support 5G.
    LTE support
    What it is: Support for Long-Term Evolution (4G) networks, providing high-speed mobile data.
    When it matters: When you need reliable mobile internet coverage in areas where 5G isn't available.

    Importance: HIGH

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) supports LTE. 99.7% of smartphones include LTE connectivity.
    Wi-Fi connectivity
    What it is: The ability to connect to wireless local area networks for internet access and local networking.
    When it matters: When you want to save mobile data and connect to home or public networks.

    Importance: HIGH

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) supports Wi-Fi connectivity. 100% of smartphones offer Wi-Fi support.
    Show more
    Screen size
    What it is: The physical diagonal measurement of the display area, usually expressed in inches.
    When it matters: When you choose between a compact phone for one-handed use or a large screen for media.

    Importance: MEDIUM

    Good value: ≥6.6 inches

    6.67 inches
    FOSSiBOT S3 Pro (20GB + 128GB) has a screen size of 6.67 inches which is larger than the screens of 38.3% of smartphones and equal to those of 13.4% of smartphones.
    Screen resolution
    What it is: The total number of pixels displayed on the screen, expressed as width x height, determining sharpness.
    When it matters: When you want crisp text and sharp details in photos and videos.

    Importance: HIGH

    1080 x 2408 px
    FOSSiBOT S3 Pro (20GB + 128GB) has a screen resolution of 1080 x 2408 px which is higher than that of 57.4% of smartphones and equal to that of 4.2% of smartphones.
    Pixel density
    What it is: The concentration of pixels on the display, measured in pixels per inch (PPI), affecting image clarity.
    When it matters: When you want the image to look perfectly smooth with no visible pixels.

    Importance: HIGH

    Good value: >400 ppi

    401 ppi
    FOSSiBOT S3 Pro (20GB + 128GB) has a pixel density of 401 ppi which is higher than that of 58.5% of smartphones and equal to that of 3% of smartphones.
    Display type
    What it is: The specific technology used for the screen panel (e.g., OLED, IPS LCD), influencing contrast, color, and efficiency.
    When it matters: When you care about vibrant colors, deep blacks, and battery efficiency.

    Importance: HIGH

    OLED/AMOLED
    FOSSiBOT S3 Pro (20GB + 128GB) uses a OLED/AMOLED display type. 58.6% of smartphones use this display technology.
    Refresh rate
    What it is: The number of times per second the display updates the image, measured in Hertz (Hz); higher rates offer smoother motion.
    When it matters: When you want scrolling to feel fluid and games to look smoother.

    Importance: HIGH

    Good value: ≥120 Hz

    120 Hz
    FOSSiBOT S3 Pro (20GB + 128GB) supports a refresh rate of 120 Hz which is higher than in 34.7% of smartphones and equal to that in 55.2% of smartphones.
    Show more
    Battery capacity
    What it is: The amount of electric charge the battery can hold, measured in milliampere-hours (mAh).
    When it matters: When you want a general idea of how large the battery is physically.

    Importance: HIGH

    Good value: >5000 mAh

    5000 mAh
    FOSSiBOT S3 Pro (20GB + 128GB) has a battery capacity of 5000 mAh which is larger than the batteries in 28.3% of smartphones and equal to those in 28.8% of smartphones.
    Charging speed
    What it is: The maximum power input supported for wired charging, measured in Watts (W).
    When it matters: When you are in a rush and need to top up your battery quickly.

    Importance: HIGH

    Good value: >60 W

    18 W
    FOSSiBOT S3 Pro (20GB + 128GB) supports charging speeds of 18 W which is slower than in 76% of smartphones and equal to speeds in 11.7% of smartphones.
    Fast charging
    What it is: In the context of modern electronics, "Fast Charging" refers to any technology that delivers power significantly higher than the traditional USB baseline. While the industry standard for a basic charger is 5W (5V at 1A), a charger is generally classified as a fast charger if it provides at least 18W of power.
    When it matters: When you want to minimize the time your phone spends tethered to a wall outlet.

    Importance: MEDIUM

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) supports fast charging. 93.1% of smartphones support fast charging.
    GSMArena full wired charge time
    What it is: The time taken to charge the battery from 0% to 100% using the bundled or recommended charger, as measured by GSMArena.
    When it matters: When you want to know exactly how long it takes to charge from 0 to 100% in real-world tests.

    Importance: MEDIUM

    Good value: <45 min

    ?
    Wireless charging
    What it is: The ability to charge the battery without cables by placing the device on a compatible charging pad.
    When it matters: When you prefer the convenience of dropping your phone on a pad without fumbling with cables.

    Importance: MEDIUM

    no
    FOSSiBOT S3 Pro (20GB + 128GB) does not support wireless charging. 25.3% of smartphones support wireless charging.
    Show more
    Stereo speakers
    What it is: A setup involving two or more speakers to create a left-right audio separation for immersive sound.
    When it matters: When you watch videos or play games without headphones and want immersive sound.

    Importance: MEDIUM

    no
    FOSSiBOT S3 Pro (20GB + 128GB) does not include stereo speakers. 64.5% of smartphones provide stereo audio.
    3.5 mm headphone jack
    What it is: A standard analog audio port for connecting wired headphones or auxiliary cables.
    When it matters: When you prefer using traditional wired headphones without dongles or adapters.

    Importance: LOW

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) includes a 3.5 mm headphone jack. 45.3% of smartphones still offer this port.
    Number of microphones
    What it is: The total count of microphones on the device, used for audio recording, noise cancellation, and voice isolation.
    When it matters: When you want clear audio recording and better noise cancellation during calls.

    Importance: MEDIUM

    Good value: ≥3

    ?
    FM radio
    What it is: A built-in receiver allowing users to listen to local FM radio stations using wired headphones as an antenna.
    When it matters: When you want to listen to local radio stations without using mobile data.

    Importance: LOW

    yes
    FOSSiBOT S3 Pro (20GB + 128GB) includes an FM radio. 33.7% of smartphones offer FM radio functionality.
    aptX Lossless
    What it is: A Bluetooth technology designed to deliver CD-quality audio without data loss during transmission.
    When it matters: When you demand CD-quality audio over Bluetooth with no loss of detail.

    Importance: LOW

    no
    FOSSiBOT S3 Pro (20GB + 128GB) does not support aptX Lossless. 12.9% of smartphones provide aptX Lossless.
    Show more
    Height
    What it is: The vertical dimension of the device.
    When it matters: When you are concerned about whether the phone will fit in your pocket or purse.

    Importance: LOW

    Good value: <162 mm

    162.5 mm
    FOSSiBOT S3 Pro (20GB + 128GB) has a height of 162.5 mm which is shorter than 63.5% of smartphones and equal to that of 0.9% of smartphones.
    Width
    What it is: The horizontal dimension of the device when held in portrait orientation.
    When it matters: When you care about how easy the phone is to grip and use with one hand.

    Importance: LOW

    Good value: <75 mm

    74.3 mm
    FOSSiBOT S3 Pro (20GB + 128GB) has a width of 74.3 mm which is narrower than 79% of smartphones and equal to that of 1.4% of smartphones.
    Thickness
    What it is: The depth of the device profile, excluding the camera bump unless specified.
    When it matters: When you prefer a sleek, slim profile that slides easily into tight pockets.

    Importance: LOW

    Good value: <8 mm

    8.6 mm
    FOSSiBOT S3 Pro (20GB + 128GB) has a thickness of 8.6 mm which is thicker than 65% of smartphones and equal to that of 3.9% of smartphones.
    Weight
    What it is: The total mass of the smartphone, affecting how heavy it feels in the hand.
    When it matters: When you want a phone that feels light in your pocket or substantial in your hand.

    Importance: MEDIUM

    Good value: <190 g

    199 g
    FOSSiBOT S3 Pro (20GB + 128GB) weighs 199 g which is heavier than 55.1% of smartphones and equal to the weight of 3.2% of smartphones.
    Device volume
    What it is: The calculated total volume of the device's physical body.
    When it matters: When you want to understand the overall physical bulk of the device.

    Importance: LOW

    Good value: <98cm³

    95904 cm³
    FOSSiBOT S3 Pro (20GB + 128GB) has a device volume of 95904 cm³ which is smaller than 57.8% of smartphones and equal to that of 1% of smartphones.
    Show more

    FOSSiBOT S3 Pro (20GB + 128GB) vs the average smartphone

    • 12 GB more RAM
      FOSSiBOT S3 Pro (20GB + 128GB) has more RAM capacity than the average smartphone (20 GB vs 8 GB). The average smartphone has 8 GB of RAM.
      What it is: The amount of volatile memory available for running apps and multitasking.
      When it matters: When you use multiple apps at once or want smoother multitasking without reloads.

      Importance: HIGH

      Good value: >12 GB

      FOSSiBOT S3 Pro (20GB + 128GB) has more RAM capacity than the average smartphone (20 GB vs 8 GB). The average smartphone has 8 GB of RAM.20 GB vs 8 GB
    • Has an always-on display
      FOSSiBOT S3 Pro (20GB + 128GB) features an always-on display, the average smartphone does not. 49.1% of smartphones offer always-on functionality.
      What it is: A feature that keeps a portion of the screen active to show time, date, and notifications while the device is asleep.
      When it matters: When you want to glance at the time or notifications without touching the phone.

      Importance: MEDIUM

      FOSSiBOT S3 Pro (20GB + 128GB) features an always-on display, the average smartphone does not. 49.1% of smartphones offer always-on functionality.
    • Uses a BSI sensor
      FOSSiBOT S3 Pro (20GB + 128GB) uses a BSI sensor, the average smartphone does not. 40.1% of smartphones include BSI sensors.
      What it is: Indicates the use of a Back-Side Illuminated sensor, which arranges the wiring behind the light-receiving surface to improve low-light sensitivity.
      When it matters: When you take photos in dim environments and need better light sensitivity.

      Importance: LOW

      FOSSiBOT S3 Pro (20GB + 128GB) uses a BSI sensor, the average smartphone does not. 40.1% of smartphones include BSI sensors.
    • Higher-resolution main camera
      FOSSiBOT S3 Pro (20GB + 128GB) has a higher main camera resolution than the average smartphone (64 MP & 2 MP vs 50 MP & 8 MP ). The average smartphone main camera has 50 MP & 8 MP megapixels.
      What it is: The resolution of the primary rear camera sensor, measured in millions of pixels (MP). Higher megapixels can capture more detail.
      When it matters: When you want to capture high-resolution images that can be cropped or printed large.

      Importance: HIGH

      Good value: >50 MP

      FOSSiBOT S3 Pro (20GB + 128GB) has a higher main camera resolution than the average smartphone (64 MP & 2 MP vs 50 MP & 8 MP ). The average smartphone main camera has 50 MP & 8 MP megapixels.64 MP & 2 MP vs 50 MP & 8 MP
    • Has a secondary display
      FOSSiBOT S3 Pro (20GB + 128GB) features a secondary display, the average smartphone does not. 6.7% of smartphones include a secondary screen.
      What it is: An additional screen, often found on the outside of foldable phones or the back of standard phones.
      When it matters: When you need to check notifications or take selfies with the main camera on a foldable phone.

      Importance: LOW

      FOSSiBOT S3 Pro (20GB + 128GB) features a secondary display, the average smartphone does not. 6.7% of smartphones include a secondary screen.
    • Has FM radio
      FOSSiBOT S3 Pro (20GB + 128GB) features an FM radio, the average smartphone does not. 33.7% of smartphones include an FM tuner.
      What it is: A built-in receiver allowing users to listen to local FM radio stations using wired headphones as an antenna.
      When it matters: When you want to listen to local radio stations without using mobile data.

      Importance: LOW

      FOSSiBOT S3 Pro (20GB + 128GB) features an FM radio, the average smartphone does not. 33.7% of smartphones include an FM tuner.
    • Has a 3.5 mm headphone jack
      FOSSiBOT S3 Pro (20GB + 128GB) features a 3.5 mm headphone jack, the average smartphone does not. 45.3% of smartphones include a standard headphone jack.
      What it is: A standard analog audio port for connecting wired headphones or auxiliary cables.
      When it matters: When you prefer using traditional wired headphones without dongles or adapters.

      Importance: LOW

      FOSSiBOT S3 Pro (20GB + 128GB) features a 3.5 mm headphone jack, the average smartphone does not. 45.3% of smartphones include a standard headphone jack.
    • 1 more flash LEDs
      FOSSiBOT S3 Pro (20GB + 128GB) has more flash LEDs than the average smartphone (2 vs 1). The average smartphone has 1 flash LEDs.
      What it is: The count of individual Light Emitting Diodes used in the camera flash module, often to provide brighter light or better color balance.
      When it matters: When you need brighter, more even illumination for your photos in dark settings.

      Importance: LOW

      Good value: ≥2

      FOSSiBOT S3 Pro (20GB + 128GB) has more flash LEDs than the average smartphone (2 vs 1). The average smartphone has 1 flash LEDs.2 vs 1
    • 12 GB more RAM
      FOSSiBOT S3 Pro (20GB + 128GB) has more RAM capacity than the average smartphone (20 GB vs 8 GB). The average smartphone has 8 GB of RAM.
    • 5.3% faster GPU clock
      FOSSiBOT S3 Pro (20GB + 128GB) has a higher GPU frequency than the average smartphone (1000 MHz vs 950 MHz). The average smartphone GPU frequency is 950 MHz.
    • Uses a BSI sensor
      FOSSiBOT S3 Pro (20GB + 128GB) uses a BSI sensor, the average smartphone does not. 40.1% of smartphones include BSI sensors.
    • Higher-resolution main camera
      FOSSiBOT S3 Pro (20GB + 128GB) has a higher main camera resolution than the average smartphone (64 MP & 2 MP vs 50 MP & 8 MP ). The average smartphone main camera has 50 MP & 8 MP megapixels.
    • 1 more flash LEDs
      FOSSiBOT S3 Pro (20GB + 128GB) has more flash LEDs than the average smartphone (2 vs 1). The average smartphone has 1 flash LEDs.
    • Wider front camera aperture
      FOSSiBOT S3 Pro (20GB + 128GB) has a wider front camera aperture than the average smartphone (f/2.0 vs f/2.2 ). The average aperture is f/2.2 .
    • 28.1% larger main camera sensor area
      FOSSiBOT S3 Pro (20GB + 128GB) has a larger main camera sensor area than the average smartphone (41 mm² vs 32 mm²). The average main camera sensor area is 32 mm².
    • Has an always-on display
      FOSSiBOT S3 Pro (20GB + 128GB) features an always-on display, the average smartphone does not. 49.1% of smartphones offer always-on functionality.
    • Has a secondary display
      FOSSiBOT S3 Pro (20GB + 128GB) features a secondary display, the average smartphone does not. 6.7% of smartphones include a secondary screen.
    • Higher screen resolution
      FOSSiBOT S3 Pro (20GB + 128GB) has a higher screen resolution than the average smartphone (1080x 2408 px vs 1080x 2400 px ). The average smartphone resolution is 1080x 2400 px .
    • 1.5% higher pixel density
      FOSSiBOT S3 Pro (20GB + 128GB) has a higher pixel density than the average smartphone (401 ppi vs 395 ppi). The average smartphone has a pixel density of 395 ppi.
    • Has a curved display
      FOSSiBOT S3 Pro (20GB + 128GB) features a curved display, the average smartphone does not. 24.4% of smartphones have curved screens.
    • Has FM radio
      FOSSiBOT S3 Pro (20GB + 128GB) features an FM radio, the average smartphone does not. 33.7% of smartphones include an FM tuner.
    • Has a 3.5 mm headphone jack
      FOSSiBOT S3 Pro (20GB + 128GB) features a 3.5 mm headphone jack, the average smartphone does not. 45.3% of smartphones include a standard headphone jack.
    • 1.7 mm narrower
      FOSSiBOT S3 Pro (20GB + 128GB) is narrower than the average smartphone (74.3 mm vs 76 mm). The average smartphone width is 76 mm.
    • Better IP rating
      FOSSiBOT S3 Pro (20GB + 128GB) has a better IP rating than the average smartphone (IP68 vs IP67 ). The average IP rating is IP67 .

    Total
    Performance & Hardware
    Camera
    Display
    Audio
    Design
    • Worse processor
      FOSSiBOT S3 Pro (20GB + 128GB) uses a worse processor than the average smartphone (MediaTek Helio G85 vs Qualcomm Snapdragon 6s Gen 3 ).
    • 2x larger process node
      FOSSiBOT S3 Pro (20GB + 128GB) is manufactured on a larger process node than the average smartphone (12 nm vs 6 nm). The average smartphone uses a 6 nm process.
    • 50% less storage
      FOSSiBOT S3 Pro (20GB + 128GB) offers less internal storage than the average smartphone (128 GB vs 256 GB). The average smartphone includes 256 GB of internal storage.
    • 42.9% lower maximum RAM capacity
      FOSSiBOT S3 Pro (20GB + 128GB) supports less maximum RAM than the average smartphone (8 GB vs 14 GB). The average smartphone supports 14 GB of RAM.
    • 47.8% lower Geekbench 6 multi-core benchmark score
      FOSSiBOT S3 Pro (20GB + 128GB) performs worse in Geekbench 6 multi-core than the average smartphone (1,322 vs 2,533). The average smartphone scores 2,533 in the Geekbench 6 multi-core test.
    • 34.5% slower memory speed
      FOSSiBOT S3 Pro (20GB + 128GB) has a lower memory speed than the average smartphone (1800 MHz vs 2750 MHz). The average smartphone has a memory speed of 2750 MHz.
    • 55% lower Geekbench 6 single-core benchmark score
      FOSSiBOT S3 Pro (20GB + 128GB) performs worse in Geekbench 6 single-core than the average smartphone (424 vs 942). The average smartphone scores 942 in the Geekbench 6 single-core test.
    • 47.6% lower memory bandwidth
      FOSSiBOT S3 Pro (20GB + 128GB) has lower memory bandwidth than the average smartphone (13.4 GB/s vs 25.6 GB/s). The average smartphone has a bandwidth of 25.6 GB/s.
    • 16.7% lower CPU boost clock speed
      FOSSiBOT S3 Pro (20GB + 128GB) has a lower CPU boost clock speed than the average smartphone (2 GHz vs 2.4 GHz). The average smartphone has a boost clock speed of 2.4 GHz.
    • 16.7% higher TDP (less efficient)
      FOSSiBOT S3 Pro (20GB + 128GB) has a higher TDP than the average smartphone (5 W vs 6 W). The average smartphone has a TDP of 6 W.
    • Lower CPU base clock speed
      FOSSiBOT S3 Pro (20GB + 128GB) has a lower CPU base clock speed than the average smartphone (2x 2 GHz & 6x 1.8 GHz vs 2x 2.2 GHz & 6x 2 GHz ). The average smartphone has a base clock speed of 2x 2.2 GHz & 6x 2 GHz .
    • Lacks focus mode
      FOSSiBOT S3 Pro (20GB + 128GB) does not have a focus mode, the average smartphone does. 60.4% of smartphones include a dedicated focus mode.
    • Lacks instant markup
      FOSSiBOT S3 Pro (20GB + 128GB) does not support instant markup, the average smartphone does. 52.7% of smartphones include instant markup tools.
    • No Wi-Fi password sharing
      FOSSiBOT S3 Pro (20GB + 128GB) does not support Wi-Fi password sharing, the average smartphone does. 57.9% of smartphones allow easy Wi-Fi sharing.
    • Worse main camera video quality
      FOSSiBOT S3 Pro (20GB + 128GB) records worse main camera video than the average smartphone. 11.80x of smartphones support 4K video recording.
    • Lower front camera megapixels
      FOSSiBOT S3 Pro (20GB + 128GB) has lower front camera megapixels than the average smartphone (8 MP vs 16 MP ). The average smartphone has a 16 MP front camera.
    • Narrower main camera aperture
      FOSSiBOT S3 Pro (20GB + 128GB) has a narrower main camera aperture than the average smartphone (f/1.89 & f/2.4 & f/2.0 vs f/1.8 & f/2.4 & f/2.4 ). The average smartphone aperture is f/1.8 & f/2.4 & f/2.4 .
    • No 5G connectivity
      FOSSiBOT S3 Pro (20GB + 128GB) does not support 5G connectivity, the average smartphone does. 66.9% of smartphones are 5G compatible.
    • Older Bluetooth version
      FOSSiBOT S3 Pro (20GB + 128GB) uses an older Bluetooth version than the average smartphone (5.0 vs 5.2). The average smartphone uses Bluetooth 5.2.
    • 75% lower touch sampling rate
      FOSSiBOT S3 Pro (20GB + 128GB) has a lower touch sampling rate than the average smartphone (60 Hz vs 240 Hz). The average smartphone has a sampling rate of 240 Hz.
    • 24.2% lower screen brightness
      FOSSiBOT S3 Pro (20GB + 128GB) has a lower screen brightness than the average smartphone (500 nits vs 660 nits). The average smartphone has a brightness of 660 nits.
    • Lower contrast ratio
      FOSSiBOT S3 Pro (20GB + 128GB) has a lower contrast ratio than the average smartphone (100000:1 vs 1000000:1 ). The average smartphone has a contrast ratio of 1000000:1 .
      AMOLED/OLED displays have an effectively infinite contrast ratio
    • 45.5% slower charging speed
      FOSSiBOT S3 Pro (20GB + 128GB) has a slower charging speed than the average smartphone (18 W vs 33 W). The average smartphone charges at 33 W.
    • No stereo speakers
      FOSSiBOT S3 Pro (20GB + 128GB) does not have stereo speakers, the average smartphone does. 64.5% of smartphones feature stereo speakers.
    • No aptX HD
      FOSSiBOT S3 Pro (20GB + 128GB) does not support aptX HD, the average smartphone does. 50.4% of smartphones support aptX HD.
    • No LDAC support
      FOSSiBOT S3 Pro (20GB + 128GB) does not support LDAC, the average smartphone does. 60.3% of smartphones support LDAC.
    • No aptX support
      FOSSiBOT S3 Pro (20GB + 128GB) does not support aptX, the average smartphone does. 50.2% of smartphones support aptX.
    • 0.3 mm thicker
      FOSSiBOT S3 Pro (20GB + 128GB) is thicker than the average smartphone (8.6 mm vs 8.3 mm). The average smartphone has a thickness of 8.3 mm.
    • 1.4% heavier
      FOSSiBOT S3 Pro (20GB + 128GB) is heavier than the average smartphone (199 g vs 196.2 g). The average smartphone weighs 196.2 g.
    • No 5G connectivity
      FOSSiBOT S3 Pro (20GB + 128GB) does not support 5G connectivity, the average smartphone does. 66.9% of smartphones are 5G compatible.
      What it is: Support for the fifth generation of mobile network technology, offering significantly faster data speeds and lower latency.
      When it matters: When you need the fastest possible mobile data speeds for streaming and downloading on the go.

      Importance: MEDIUM

      FOSSiBOT S3 Pro (20GB + 128GB) does not support 5G connectivity, the average smartphone does. 66.9% of smartphones are 5G compatible.
    • No stereo speakers
      FOSSiBOT S3 Pro (20GB + 128GB) does not have stereo speakers, the average smartphone does. 64.5% of smartphones feature stereo speakers.
      What it is: A setup involving two or more speakers to create a left-right audio separation for immersive sound.
      When it matters: When you watch videos or play games without headphones and want immersive sound.

      Importance: MEDIUM

      FOSSiBOT S3 Pro (20GB + 128GB) does not have stereo speakers, the average smartphone does. 64.5% of smartphones feature stereo speakers.
    • Worse processor
      FOSSiBOT S3 Pro (20GB + 128GB) uses a worse processor than the average smartphone (MediaTek Helio G85 vs Qualcomm Snapdragon 6s Gen 3 ).
      What it is: The central System-on-Chip (SoC) that houses the CPU, GPU, modem, and other core processing components.
      When it matters: When you want to know the specific engine powering your device's speed and features.

      Importance: HIGH

      FOSSiBOT S3 Pro (20GB + 128GB) uses a worse processor than the average smartphone (MediaTek Helio G85 vs Qualcomm Snapdragon 6s Gen 3 ).MediaTek Helio G85 vs Qualcomm Snapdragon 6s Gen 3
    • 2x larger process node
      FOSSiBOT S3 Pro (20GB + 128GB) is manufactured on a larger process node than the average smartphone (12 nm vs 6 nm). The average smartphone uses a 6 nm process.
      What it is: The size of the manufacturing process used to create the chip's transistors, measured in nanometers (nm). Smaller nodes generally indicate more advanced, power-efficient chips.
      When it matters: When you want a chipset that is more power-efficient and generates less heat.

      Importance: HIGH

      Good value: <6 nm

      FOSSiBOT S3 Pro (20GB + 128GB) is manufactured on a larger process node than the average smartphone (12 nm vs 6 nm). The average smartphone uses a 6 nm process.12 nm vs 6 nm
    • 50% less storage
      FOSSiBOT S3 Pro (20GB + 128GB) offers less internal storage than the average smartphone (128 GB vs 256 GB). The average smartphone includes 256 GB of internal storage.
      What it is: The total built-in space available for apps, media, and files.
      When it matters: When you keep large libraries of photos, videos, and apps directly on your device.

      Importance: HIGH

      Good value: >256 GB

      FOSSiBOT S3 Pro (20GB + 128GB) offers less internal storage than the average smartphone (128 GB vs 256 GB). The average smartphone includes 256 GB of internal storage.128 GB vs 256 GB
    • 42.9% lower maximum RAM capacity
      FOSSiBOT S3 Pro (20GB + 128GB) supports less maximum RAM than the average smartphone (8 GB vs 14 GB). The average smartphone supports 14 GB of RAM.
      What it is: The highest amount of RAM that the device’s chipset or architecture can support, regardless of how much is actually installed.
      When it matters: When you are considering the long-term potential of the hardware platform.

      Importance: MEDIUM

      Good value: >16 GB

      FOSSiBOT S3 Pro (20GB + 128GB) supports less maximum RAM than the average smartphone (8 GB vs 14 GB). The average smartphone supports 14 GB of RAM.8 GB vs 14 GB
    • 47.8% lower Geekbench 6 multi-core benchmark score
      FOSSiBOT S3 Pro (20GB + 128GB) performs worse in Geekbench 6 multi-core than the average smartphone (1,322 vs 2,533). The average smartphone scores 2,533 in the Geekbench 6 multi-core test.
      What it is: A cross-platform benchmark by Primate Labs that evaluates multi-core CPU performance. It simulates real-world workloads to measure how efficiently a device handles multitasking and parallel processing.
      When it matters: When you perform heavy multitasking or run pro-level apps like video editors.

      Importance: MEDIUM

      Good value: >4000

      FOSSiBOT S3 Pro (20GB + 128GB) performs worse in Geekbench 6 multi-core than the average smartphone (1,322 vs 2,533). The average smartphone scores 2,533 in the Geekbench 6 multi-core test.1322 vs 2533
    • Worse main camera video quality
      FOSSiBOT S3 Pro (20GB + 128GB) records worse main camera video than the average smartphone. 11.80x of smartphones support 4K video recording.
      What it is: The maximum resolution and frame rate at which the main rear camera can record video.
      When it matters: When you want to record memories or content in high definition or 4K.

      Importance: MEDIUM

      FOSSiBOT S3 Pro (20GB + 128GB) records worse main camera video than the average smartphone. 11.80x of smartphones support 4K video recording.1080x 30 fps vs 2160x 30 fps
    Total
    Overall
    Performance & Hardware
    Software
    Camera
    Connectivity
    Display
    Battery
    Audio
    Design

    Graphic comparison of FOSSiBOT S3 Pro (20GB + 128GB) and other smartphones

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    Third-party reviews

    amazon
    3.6
    15 Reviews
    amazon
    5.0
    2 Reviews

    (Reviews last updated: Mar 2026)

    3.6
    15 Reviews
    5.0
    2 Reviews

    (Reviews last updated: Mar 2026)

    What customers like about FOSSiBOT S3 Pro (20GB + 128GB)?

    • High-quality 6.67-inch AMOLED curved display with vibrant colors and deep blacks
    • Unique 1.09-inch secondary rear display for quick notifications and tools
    • Excellent value for money, often cited as a premium experience at a budget price
    • Large 5,000mAh battery providing reliable all-day power
    • Generous memory options with up to 20GB RAM (including virtual expansion)
    • Modern software experience running Android 14 out of the box
    • Sleek and aesthetically pleasing design with thin bezels

    What customers dislike about FOSSiBOT S3 Pro (20GB + 128GB)?

    • Underwhelming camera performance in low-light conditions with noticeable grain
    • Limited 60Hz refresh rate on the main display, which some users find a missed opportunity
    • Poor sound quality from a single, flat-sounding speaker
    • Imbalanced weight distribution due to the heavy top camera and secondary display module
    • Main screen can be overly sensitive to touch, leading to accidental activations in pockets
    • In-display fingerprint scanner can be slow or unresponsive at times
    • Lacks 5G connectivity, restricted to 4G LTE bands

    Expert reviews

    F
    fr.root-nation.com
    ?
    19/01/2025
    Fossibot S3 Pro Review: A Budget Smartphone with a Curved AMOLED Display

    The FOSSiBOT S3 Pro is a budget-friendly device featuring a 6.67-inch FHD+ curved AMOLED display with vibrant colors, though limited to a 60Hz refresh rate. A key differentiator is the 1.09-inch rear circular display, which allows for convenient access to notifications, music, and tools. Despite the premium screen, the device suffers from poor sound quality, imbalanced weight...Read more

    (Translated)Show original
    N
    noticias.compudemano.com
    ?
    06/01/2025
    Fossibot S3 Pro Review: Dual Screen and Solid Performance

    The FOSSiBOT S3 Pro is a budget-friendly device featuring a 6.67-inch curved AMOLED screen and a unique 1.09-inch rear secondary display for notifications and selfies. Powered by a MediaTek Helio G85 processor, it offers 6GB of RAM (expandable to 20GB), 128GB of storage, and a 64MP Sony main camera, all operating on Android 14. Key pros include the high-quality, vibrant main display...Read more

    (Translated)Show original
    I
    it.root-nation.com
    ?
    19/01/2025
    Fossibot S3 Pro Review: An affordable smartphone with a curved AMOLED display

    The FOSSiBOT S3 Pro is a budget smartphone featuring a 6.67-inch curved AMOLED display and a unique 1.09-inch rear screen, powered by a MediaTek Helio G85 processor. Key strengths include the high-contrast display, the inclusion of NFC, and a 64MP camera, all running on Android 14 with a 5000mAh battery. However, the device is limited by a 60Hz refresh rate, lacks 5G, produces flat...Read more

    (Translated)Show original
    N
    nl.root-nation.com
    ?
    19/01/2025
    Fossibot S3 Pro review: budget smartphone with AMOLED

    The Root-Nation.com review of the FOSSiBOT S3 Pro highlights it as a budget-friendly device featuring a premium 6.67-inch curved AMOLED display with vibrant visuals and an 1.09-inch circular rear screen for notifications. Performance is driven by a MediaTek Helio G85 with 6GB RAM and 128GB storage, though the device suffers from a top-heavy design, causing, according to the review,...Read more

    (Translated)Show original

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