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Asus ROG Phone II ZS660KL (12GB + 1TB) Review | 197 Data compared

Avg. price:~£1,060RAM capacity:12 GBInternal storage:1 TBScreen size:6.59 inchesMain camera megapixels:48 MP & 13 MP

Asus ROG Phone II ZS660KL (12GB + 1TB) Review: Compare 197 technical specifications and user reviews to see how this product ranks in the Smartphones category and whether it is worth buying.

6.7/10

Overall score

Score
6.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 52% of models
Score components

90%

6.7

Technical score

10%

?

User score

â–²Better than 52% of smartphones
6.2

Value for money

Value for money
6.2/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components

70%

6.7

Overall score

30%

4.9

Price

â–¼Worse than 98%
6.7

Technical score

Technical score
6.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 54% of models
Score components

25%

7.2

Performance & Hardware

18%

6.4

Camera

15%

6.6

Display

15%

6.7

Battery

10%

6.4

Software

10%

6.6

Connectivity

4%

7.7

Audio

3%

6.0

Design

â–²Better than 54%
?

User score

User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 70% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

  • No image
No image
Where to buy
    N/A~ £1,060
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of smartphone Asus ROG Phone II ZS660KL (12GB + 1TB)

Technical score
Technical score
6.7/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–² Better than 54% of models
Score components:

25%

7.2

Performance & Hardware

18%

6.4

Camera

15%

6.6

Display

15%

6.7

Battery

10%

6.4

Software

10%

6.6

Connectivity

4%

7.7

Audio

3%

6.0

Design

6.7
User score
User score
8.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 70% of models
Score components

70%

?

User ratings

30%

?

Number of reviews

?
Popularity
Popularity
1.0/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 99% of models
Popularity:
Asus ROG Phone II ZS660KL (12GB + 1TB) has a popularity of 1 point, which is lower than 63.9% of smartphones.
1.0
Value for money
Value for money
6.2/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components:

70%

6.7

Overall score

30%

4.9

Price

6.2
Brand name
Asus
Processor model
Qualcomm Snapdragon 855 Plus
This smartphone uses the Qualcomm Snapdragon 855 Plus processor which is faster than processors in 56% of smartphones and equal to processors in 0.3% of smartphones.
RAM capacity
12 GB
Market range: <4 GB – >16 GB
This smartphone has a RAM capacity of 12 GB which is larger than the RAM capacity of 59% of smartphones and equal to that of 24.3% of smartphones.
Internal storage
1 GB
Market range: <64 GB – >512 GB
This smartphone has an internal storage capacity of 1 TB which is larger than the storage of 94.3% of smartphones and equal to that of 5.6% of smartphones.
CPU boost clock speed
2.96 GHz
Market range: <2 GHz – >3.3 GHz
The CPU boost clock speed of this smartphone is 2.96 GHz which is higher than the boost speed of 75% of smartphones and equal to that of 0.3% of smartphones.
Show more
Operating system
Android
This smartphone uses the Android operating system, which outperforms that of 1%.
Android 9 Pie
Android version
Android 9 Pie
This smartphone runs Android version Android 9 Pie which is older than that found in 93.9% of smartphones and equal to that in 2.6% of smartphones.
Direct OS updates
no
This smartphone does not receive direct OS updates. 20.6% of smartphones receive direct updates.
Open-source OS
yes
This smartphone uses an open-source OS. 94.6% of smartphones use an open-source OS.
Dark mode
yes
This smartphone offers dark mode. 95.8% of smartphones support this feature.
Show more
Multi-lens main camera
yes
This smartphone includes a multi-lens main camera system. 93.7% of smartphones include multi-lens setups.
Main camera megapixels
48 MP & 13 MP
Market range: <10 – >100
This smartphone has a main camera resolution of 48 MP & 13 MP which is lower than that of 77.5% of smartphones and equal to that of 0.1% of smartphones.
Main camera aperture
f/1.8 & f/2.4
This smartphone has a main camera aperture of f/1.8 & f/2.4 which is narrower than that of 57.9% of smartphones and equal to that of 12.6% of smartphones.
Main camera sensor area
30.7 mm²
Market range: <19.7 mm² – >71.4 mm²
This smartphone has a main camera sensor area of 30.7 mm² which is smaller than the main camera sensor area of 63.5% of smartphones and equal to that of 6.3% of smartphones.
Main camera pixel size
0.8 µm
Market range: <0.64 µm – >1.22 µm
This smartphone 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.
1.6 binned
Show more
Number of SIM slots
2
Market range: <1 – >6
This smartphone 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
yes
This smartphone includes a cellular module. 100% of smartphones include cellular modules.
5G connectivity
no
This smartphone does not support 5G connectivity. 66.9% of smartphones support 5G.
LTE support
yes
This smartphone supports LTE. 99.7% of smartphones include LTE connectivity.
Wi-Fi connectivity
yes
This smartphone supports Wi-Fi connectivity. 100% of smartphones offer Wi-Fi support.
Show more
Screen size
6.59 inches
Market range: <6.3 inches – >6.82 inches
This smartphone has a screen size of 6.59 inches which is smaller than the screens of 67.8% of smartphones and equal to those of 0.8% of smartphones.
Screen resolution
1080x 2340 px
This smartphone has a screen resolution of 1080x2340 px which is lower than that of 68.4% of smartphones and equal to that of 6.1% of smartphones.
Pixel density
391 ppi
Market range: <264 ppi – >460 ppi
This smartphone has a pixel density of 391 ppi which is lower than that of 65.9% of smartphones and equal to that of 0.9% of smartphones.
Display type
OLED/AMOLED
This smartphone uses a OLED/AMOLED display type. 58.6% of smartphones use this display technology.
Refresh rate
120 Hz
Market range: <60 Hz – >144 Hz
This smartphone 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
6,000 mAh
Market range: <4k mAh – >7k mAh
This smartphone has a battery capacity of 6,000 mAh which is larger than the batteries in 73.2% of smartphones and equal to those in 6.9% of smartphones.
Charging speed
30 W
Market range: <15 W – >90 W
This smartphone supports charging speeds of 30 W which is slower than in 61.1% of smartphones and equal to speeds in 4.7% of smartphones.
Fast charging
yes
This smartphone supports fast charging. 93.1% of smartphones support fast charging.
GSMArena full wired charge time
?
Wireless charging
no
This smartphone does not support wireless charging. 25.2% of smartphones support wireless charging.
Show more
Stereo speakers
yes
This smartphone includes stereo speakers. 64.4% of smartphones provide stereo audio.
3.5 mm headphone jack
yes
This smartphone includes a 3.5 mm headphone jack. 45.5% of smartphones offer this port.
Number of microphones
4
Market range: <1 – >3
This smartphone includes 4 microphones, which is more than in 96.9% of smartphones and equal to the number in 3.1% of smartphones.
FM radio
yes
This smartphone includes an FM radio. 34.2% of smartphones offer FM radio functionality.
aptX Lossless
no
This smartphone does not support aptX Lossless. 12.9% of smartphones provide aptX Lossless.
Show more
Height
170.99 mm
Market range: <156.2 mm – >171.56 mm
This smartphone has a height of 170.99 mm which is taller than 88.7% of smartphones.
Width
77.6 mm
Market range: <73.1 mm – >81 mm
This smartphone has a width of 77.6 mm which is wider than 79.9% of smartphones and equal to that of 0.7% of smartphones.
Thickness
9.78 mm
Market range: <7.53 mm – >10.5 mm
This smartphone has a thickness of 9.78 mm which is thicker than 87.6% of smartphones.
Weight
240 g
Market range: <175 g – >256 g
This smartphone weighs 240 g which is heavier than 88.8% of smartphones and equal to the weight of 0.5% of smartphones.
Device volume
117,810 cm³
Market range: <80 cm³ – >190 cm³
This smartphone has a device volume of 117,810 cm³ which is larger than 87.1% of smartphones.
Show more

Asus ROG Phone II ZS660KL (12GB + 1TB) vs the average smartphone

246810TotalPerformance & HardwareSoftwareCameraConnectivityDisplayBatteryAudioDesign
  • 4x more storage
    This smartphone offers more internal storage than the average smartphone (1 TB vs 256 GB). The average smartphone provides 256 GB of internal storage.
    1 TB vs 256 GB
  • 20% larger battery capacity
    This smartphone has a larger battery capacity than the average smartphone (6000 mAh vs 5000 mAh). The average smartphone battery is 5000 mAh.
    6,000 mAh vs 5,000 mAh
  • 4 GB more RAM
    This smartphone has more RAM capacity than the average smartphone (12 GB vs 8 GB). The average smartphone has 8 GB of RAM.
    12 GB vs 8 GB
  • 6 more memory channels
    This smartphone has more memory channels than the average smartphone (8 vs 2). The average smartphone has 2 memory channels.
    8 vs 2
  • 23.3% higher CPU boost clock speed
    This smartphone has a higher CPU boost clock speed than the average smartphone (3 GHz vs 2.4 GHz). The average smartphone has a boost clock speed of 2.4 GHz.
    2.96 GHz vs 2.4 GHz
  • 2 more microphone/s
    This smartphone has more microphones than the average smartphone (4 vs 2). The average smartphone has 2 microphones.
    4 vs 2
  • Supports HDR10 support
    This smartphone supports HDR10, the average smartphone does not. 42.7% of smartphones are HDR10 compatible.
  • Supports RAW photo capture
    This smartphone supports RAW photo capture, the average smartphone does not. 37.1% of smartphones allow RAW files.
  • 4x more storage
    This smartphone offers more internal storage than the average smartphone (1 TB vs 256 GB). The average smartphone provides 256 GB of internal storage.
    1 TB vs 256 GB
  • 4 GB more RAM
    This smartphone has more RAM capacity than the average smartphone (12 GB vs 8 GB). The average smartphone has 8 GB of RAM.
    12 GB vs 8 GB
  • 23.3% higher CPU boost clock speed
    This smartphone has a higher CPU boost clock speed than the average smartphone (3 GHz vs 2.4 GHz). The average smartphone has a boost clock speed of 2.4 GHz.
    2.96 GHz vs 2.4 GHz
  • 6 more memory channels
    This smartphone has more memory channels than the average smartphone (8 vs 2). The average smartphone has 2 memory channels.
    8 vs 2
  • Higher CPU base clock speed
    This smartphone has a higher CPU base clock speed than the average smartphone (1x2.96 GHz & 3x2.42 GHz & 4x1.8 GHz vs 2x2.2 GHz & 6x2 GHz). The average smartphone has a base clock speed of 2x2.2 GHz & 6x2 GHz.
    1x2.96 GHz & 3x2.42 GHz & 4x1.8 GHz vs 2x2.2 GHz & 6x2 GHz
  • 14.3% higher maximum RAM
    This smartphone supports more maximum RAM than the average smartphone (16 GB vs 14 GB). The average smartphone supports 14 GB RAM.
    16 GB vs 14 GB
  • 24.2% higher memory bandwidth
    This smartphone has higher memory bandwidth than the average smartphone (31.8 GB/s vs 25.6 GB/s). The average memory bandwidth is 25.6 GB/s.
    31.79 GB/s vs 25.6 GB/s
  • 9.6% higher Geekbench 6 single-core benchmark score
    This smartphone scores better in Geekbench 6 single-core than the average smartphone (1,032 vs 942). The average smartphone scores 942 in single-core.
    1,032 vs 942
  • Supports RAW photo capture
    This smartphone supports RAW photo capture, the average smartphone does not. 37.1% of smartphones allow RAW files.
  • Uses a BSI sensor
    This smartphone uses a BSI sensor, the average smartphone does not. 40.5% of smartphones include BSI sensors.
  • Supports laser autofocus
    This smartphone features laser autofocus, the average smartphone does not. 21.4% of smartphones include laser AF.
  • Better main camera video
    This smartphone records better main camera video than the average smartphone. 22.60x of smartphones support 4K or higher.
    2160x60 fps vs 2160x30 fps
  • 1 more flash LEDs
    This smartphone has more flash LEDs than the average smartphone (2 vs 1). The average smartphone has 1 flash LEDs.
    2 vs 1
  • Supports HDR10 video recording
    This smartphone supports HDR10 video recording, the average smartphone does not. 35.9% of smartphones support HDR10.
  • Has a dual-tone LED flash
    This smartphone features a dual-tone LED flash, the average smartphone does not. 41.4% of smartphones include dual-tone flash.
  • Higher front camera megapixels
    This smartphone has more front camera megapixels than the average smartphone (24 MP vs 16 MP). The average front camera has 16 MP megapixels.
    24 MP vs 16 MP
  • Newer USB version
    This smartphone supports a newer USB version than the average smartphone (3.1 vs 2). The average version is USB 2.0.
    3.1 vs 2.0
  • Supports HDR10 support
    This smartphone supports HDR10, the average smartphone does not. 42.7% of smartphones are HDR10 compatible.
  • Has an always-on display
    This smartphone features an always-on display, the average smartphone does not. 49.2% of smartphones offer always-on functionality.
  • Better display glass type
    This smartphone features a better display glass type than the average smartphone (Corning Gorilla Glass 6 vs Corning Gorilla Glass 5). The average smartphone uses Corning Gorilla Glass 5 protection.
    Corning Gorilla Glass 6 vs Corning Gorilla Glass 5
  • 20% larger battery capacity
    This smartphone has a larger battery capacity than the average smartphone (6000 mAh vs 5000 mAh). The average smartphone battery is 5000 mAh.
    6,000 mAh vs 5,000 mAh
  • Higher GSMArena battery life endurance score
    This smartphone has a higher GSMArena battery life endurance score than the average smartphone (114 vs 99.5). The average endurance score is 99.5.
    114 vs 99.5
  • 2 more microphone/s
    This smartphone has more microphones than the average smartphone (4 vs 2). The average smartphone has 2 microphones.
    4 vs 2
  • Supports aptX Adaptive
    This smartphone supports aptX Adaptive, the average smartphone does not. 34.5% of smartphones include aptX Adaptive support.
  • Has a 3.5 mm headphone jack
    This smartphone features a 3.5 mm headphone jack, the average smartphone does not. 45.5% of smartphones include a standard headphone jack.
  • Has FM radio
    This smartphone features an FM radio, the average smartphone does not. 34.2% of smartphones include an FM tuner.
  • Supports aptX
    This smartphone supports aptX, the average smartphone does not. 50% of smartphones are aptX compatible.
  • No 5G connectivity
    This smartphone does not support 5G connectivity, the average smartphone does. 66.9% of smartphones are 5G compatible.
  • 73.7% slower GPU clock
    This smartphone has a lower GPU frequency than the average smartphone (250 MHz vs 950 MHz). The average smartphone has a GPU frequency of 950 MHz.
    250 MHz vs 950 MHz
  • Narrower main camera aperture
    This smartphone has a narrower main camera aperture than the average smartphone (f/1.8 & f/2.4 vs f/1.8 & f/2.2 & f/2.4 & f/2.4). The average smartphone aperture is f/1.8 & f/2.2 & f/2.4 & f/2.4.
    f/1.8 & f/2.4 vs f/1.8 & f/2.2 & f/2.4 & f/2.4
  • No live text recognition
    This smartphone does not support live text recognition, the average smartphone does. 50.9% of smartphones offer real-time text recognition.
  • No LDAC support
    This smartphone does not support LDAC, the average smartphone does. 60.3% of smartphones support LDAC.
  • No memory card slot
    This smartphone does not have a memory card slot, the average smartphone does. 53.5% of smartphones feature expandable storage.
  • Older Android version
    This smartphone runs an older Android version than the average smartphone (Android 9 Pie vs Android 14). The average smartphone runs Android version Android 14.
    Android 9 Pie vs Android 14
  • 20.8% lower DxOMark Mobile score
    This smartphone has a lower DxOMark Mobile score than the average smartphone (95 vs 120). The average smartphone scores 120.
    95 vs 120
  • 4.08x more expensive
    Asus ROG Phone II ZS660KL (12GB + 1TB) is more expensive than the average smartphone (£1,060 vs £260).
    £1,060 vs £260
  • 18.6% worse value for money
    Asus ROG Phone II ZS660KL (12GB + 1TB) has worse value for money than the average smartphone (6.19 vs 7.3).
    6.19 vs 7.34
  • 5.44x less popular
    Asus ROG Phone II ZS660KL (12GB + 1TB) is less popular than the average smartphone (1 vs 5.4).
    1 vs 5.44
  • 73.7% slower GPU clock
    This smartphone has a lower GPU frequency than the average smartphone (250 MHz vs 950 MHz). The average smartphone has a GPU frequency of 950 MHz.
    250 MHz vs 950 MHz
  • 50% less L3 cache
    This smartphone has a smaller L3 cache than the average smartphone (2048 KB vs 4096 KB). The average smartphone has an L3 cache of 4096 KB.
    2,048 KB vs 4,096 KB
  • Worse processor
    This smartphone uses a worse processor than the average smartphone (Qualcomm Snapdragon 855 Plus vs Qualcomm Snapdragon 7 Gen 3).
    Qualcomm Snapdragon 855 Plus vs Qualcomm Snapdragon 7 Gen 3
  • 16.7% larger process node
    This smartphone is manufactured on a larger process node than the average smartphone (7 nm vs 6 nm). The average smartphone uses a 6 nm process.
    7 nm vs 6 nm
  • 35% fewer transistors
    This smartphone contains fewer transistors than the average smartphone (6700 million vs 10300 million). The average smartphone has 10300 million transistors.
    6,700 million vs 10,300 million
  • 22.4% slower memory speed
    This smartphone has a lower memory speed than the average smartphone (2133 MHz vs 2750 MHz). The average smartphone has a memory speed of 2750 MHz.
    2,133 MHz vs 2,750 MHz
  • No live text recognition
    This smartphone does not support live text recognition, the average smartphone does. 50.9% of smartphones offer real-time text recognition.
  • Older Android version
    This smartphone runs an older Android version than the average smartphone (Android 9 Pie vs Android 14). The average smartphone runs Android version Android 14.
    Android 9 Pie vs Android 14
  • No Wi-Fi password sharing
    This smartphone does not support Wi-Fi password sharing, the average smartphone does. 57.9% of smartphones allow easy Wi-Fi sharing.
  • Lacks on-device AI
    This smartphone does not support on-device AI, the average smartphone does. 99.3% of smartphones include on-device AI processing.
  • No scrolling screenshot support
    This smartphone does not support scrolling screenshots, the average smartphone does. 81.1% of smartphones allow scrolling screenshots.
  • Does not allow play while downloading
    This smartphone cannot play games while downloading, the average smartphone can. 77.3% of smartphones support play-while-downloading.
  • No dynamic theme support
    This smartphone does not support dynamic themes, the average smartphone does. 81.9% of smartphones support dynamic theming.
  • Lower on-device AI tier
    This smartphone runs on the none AI tier, while the average smartphone runs on fundamental, so its on-device AI features are more limited.
    none vs fundamental
  • Narrower main camera aperture
    This smartphone has a narrower main camera aperture than the average smartphone (f/1.8 & f/2.4 vs f/1.8 & f/2.2 & f/2.4 & f/2.4). The average smartphone aperture is f/1.8 & f/2.2 & f/2.4 & f/2.4.
    f/1.8 & f/2.4 vs f/1.8 & f/2.2 & f/2.4 & f/2.4
  • 20.8% lower DxOMark Mobile score
    This smartphone has a lower DxOMark Mobile score than the average smartphone (95 vs 120). The average smartphone scores 120.
    95 vs 120
  • Lower-resolution main camera
    This smartphone has a lower-resolution main camera than the average smartphone (48 MP & 13 MP vs 50 MP & 8 MP). The average smartphone has a 50 MP & 8 MP main camera.
    48 MP & 13 MP vs 50 MP & 8 MP
  • 4.1% smaller main camera sensor area
    This smartphone has a smaller main camera sensor area than the average smartphone (30.7 mm² vs 32 mm²). The average smartphone sensor area is 32 mm².
    30.7 mm² vs 32 mm²
  • No 5G connectivity
    This smartphone does not support 5G connectivity, the average smartphone does. 66.9% of smartphones are 5G compatible.
  • No memory card slot
    This smartphone does not have a memory card slot, the average smartphone does. 53.5% of smartphones feature expandable storage.
  • Older Bluetooth version
    This smartphone uses an older Bluetooth version than the average smartphone (5 vs 5.2). The average smartphone uses Bluetooth 5.2.
    5.0 vs 5.2
  • 400 nits lower peak brightness
    This smartphone has a lower peak brightness than the average smartphone (600 nits vs 1000 nits). The average smartphone peak brightness is 1000 nits.
    600 nits vs 1,000 nits
  • Lower screen resolution
    This smartphone has a lower screen resolution than the average smartphone (1080x2340 px vs 1080x2400 px). The average smartphone has a resolution of 1080x2400 px.
    1080x2340 px vs 1080x2400 px
  • 0.08 inches inch smaller screen size
    This smartphone has a smaller screen size than the average smartphone (6.6 inches vs 6.67 inches). The average smartphone has a screen size of 6.67 inches.
    6.59 inches vs 6.67 inches
  • 1% lower pixel density
    This smartphone has a lower pixel density than the average smartphone (391 ppi vs 395 ppi). The average smartphone has a pixel density of 395 ppi.
    391 ppi vs 395 ppi
  • 9.1% slower charging speed
    This smartphone has a slower charging speed than the average smartphone (30 W vs 33 W). The average smartphone charges at 33 W.
    30 W vs 33 W
  • No LDAC support
    This smartphone does not support LDAC, the average smartphone does. 60.3% of smartphones support LDAC.
  • 22.3% heavier
    This smartphone is heavier than the average smartphone (240 g vs 196.2 g). The average smartphone weighs 196.2 g.
    240 g vs 196.2 g
  • 5 year/s older release date
    This smartphone is an older model than the average smartphone (2019 vs 2024). 5.00% of smartphones were released more recently.
    September 2019
    2019 vs 2024
  • 1.48 mm thicker
    This smartphone is thicker than the average smartphone (9.8 mm vs 8.3 mm). The average smartphone has a thickness of 8.3 mm.
    9.78 mm vs 8.3 mm
  • 7.39 mm taller
    This smartphone is taller than the average smartphone (171 mm vs 163.6 mm). The average smartphone has a height of 163.6 mm.
    170.99 mm vs 163.6 mm
  • 1.6 mm wider
    This smartphone is wider than the average smartphone (77.6 mm vs 76 mm). The average smartphone has a width of 76 mm.
    77.6 mm vs 76 mm
  • Poor brand origin
    This smartphone has a poorer brand origin compared to the average smartphone. 0.00% of smartphones come from top-tier brand origins.
    Taiwan vs China
  • 20.5% larger volume
    This smartphone has a larger volume than the average smartphone (117810 cm³ vs 97800 cm³). The average smartphone volume is 97800 cm³.
    117,810 cm³ vs 97,800 cm³

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Expert reviews

In-depth analysis and verdict from leading tech publications

G
gsmarena.com
September 04 2019 (Release date)
Summary of the review
Asus ROG Phone II ZS660KL full phone specifications and review snippets
G
gsmarena.com
10/09/2019
Summary of the review
Asus ROG Phone II review
T
techradar.com
03/10/2019
Summary of the review
Asus ROG Phone 2 review
H
hothardware.com
12/11/2019
Summary of the review
ASUS ROG Phone II Review: A Mobile Gaming And Battery Juggernaut
D
digitalcameraworld.com
17/12/2019
Summary of the review
Asus ROG Phone II review
D
dxomark.com
16/01/2020
Summary of the review
Asus ROG Phone 2 camera review
S
stuff.tv
26/09/2019
Summary of the review
Asus ROG Phone II review
G
gsmarena.com
10/09/2019
Summary of the review
Asus ROG Phone II review: Lab tests
T
techradar.com
29/09/2019
Summary of the review
Asus ROG Phone 2 review (India edition)
H
heise.de
17/01/2020
Summary of the review
Asus ROG Phone 2 Review: Gaming King Not Just for Pro Gamers
(Translated)Show original
C
connect.de
13/01/2020
Summary of the review
Asus ROG Phone 2 Review - Connect
(Translated)Show original
H
hifitest.de
01/01/2025
Summary of the review
Smartphone Technical Specifications - Asus ROG Phone II ZS660KL
(Translated)Show original
T
techbook.de
04/09/2019
Summary of the review
New Asus ROG Phone 2 Gaming Smartphone Review
(Translated)Show original
G
gsmarena.com
User opinions (various dates)
Summary of the review
",
(Translated)Show original
G
gsmarena.com
User opinions (various dates)
Summary of the review
Asus ROG Phone II ZS660KL - User opinions and reviews - page 24
(Translated)Show original
P
profesionalreview.com
24/02/2026
Summary of the review
Asus ROG Phone II Review (Full Analysis)
(Translated)Show original
E
elchapuzasinformatico.com
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Third-party reviews

What we like about Asus ROG Phone II ZS660KL (12GB + 1TB)

  • Extremely powerful performance with Snapdragon 855 Plus, 12GB RAM, and UFS 3.0 storage
  • Massive 6,000 mAh battery providing excellent, often two-day, battery life with regular use
  • Smooth 6.59-inch 120Hz AMOLED display with low touch latency, which is great for gaming and general use
  • Excellent, loud dual front-facing stereo speakers with DTS:X Ultra support
  • Helpful gaming features like ultrasonic AirTrigger II shoulder buttons and the Game Genie control panel enhance the gaming experience
  • Includes a 3.5mm headphone jack, a rare feature in flagship phones at the time of release
  • Comes with useful accessories in the box, such as the AeroActive Cooler II fan attachment and an Aero case
  • Good value for the performance and features offered compared to other flagships at launch
  • Robust build quality, though it contributes to the phone's weight

What we don't like about Asus ROG Phone II ZS660KL (12GB + 1TB)

  • The phone is large and heavy (around 240g) due to its huge battery and metal construction
  • Camera performance is considered merely competent for a flagship phone; it lacks a telephoto lens and OIS, and struggles in low light
  • Software updates have been infrequent or non-existent in recent years, which is a major concern for long-term use and security
  • Can heat up during prolonged, intense gaming sessions, especially when in 'X Mode'
  • Lack of official water resistance (IP rating) and wireless charging capabilities
  • The in-display fingerprint sensor is not the most reliable or fast
  • Accessory ecosystem is expensive and difficult to find in certain markets, like the US
  • US versions of the phone have had issues with cellular bands (e.g., T-Mobile VoLTE), requiring user modification for full functionality

Verdict

The Asus ROG Phone II (12GB RAM + 1TB UFS 3.0 storage) is a second-generation, high-performance gaming smartphone defined by its powerful hardware and enthusiast-oriented features. Key specs include a Snapdragon 855 Plus processor, a 6.59-inch AMOLED display with a smooth 120Hz refresh rate, and an enormous 6,000mAh battery for extended gameplay. Its main pros are the exceptional performance, advanced cooling system, integrated AirTrigger pressure-sensitive shoulder buttons, and extensive accessory ecosystem. Potential cons include its bulky and heavy design, lack of official IP water resistance rating, and a dual-camera system that is merely adequate rather than top-tier compared to contemporary flagships.

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