Samsung Galaxy S21 5G (8GB + 128GB) review. Compare 197 technical specifications and user reviews to see how it ranks among smartphones and if it's worth buying.
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%
Technical Score
10.0%
User score
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%
Performance & Hardware
18.0%
Camera
15.0%
Display
15.0%
Battery
10.0%
Software
10.0%
Connectivity
4.0%
Audio
3.0%
Design
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%
User reviews
30.0%
Popularity
Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.
#18 in Best 6-Inch Smartphones
#27 in Best Smartphones Under £250
#36 in Best Samsung Phones
#59 in Best Smartphones Under £300
#114 in Best Smartphones Under £400
#137 in Best Value Smartphones
#149 in Best Smartphones Under £500
#268 in Best Android Smartphones
#288 in Best NFC Smartphones
#294 in Best 5G Smartphones
#298 in Best AI Smartphones
#299 in Best Smartphones
#1058 in Best Battery Life Smartphones
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%
Performance & Hardware
18.0%
Camera
15.0%
Display
15.0%
Battery
10.0%
Software
10.0%
Connectivity
4.0%
Audio
3.0%
Design
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%
User reviews
30.0%
Popularity
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%
Overall score
40.0%
Price
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Good value: >50 MP
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Good value: ≥1.2 µm
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Good value: ≥6.6 inches
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Good value: ≥120 Hz
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Good value: >800 nits
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Good value: <162 mm
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Good value: <8 mm
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Good value: <190 g
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Good value: >256 GB
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Good value: >5000 mAh
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Good value: ≥6.6 inches
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(Reviews last updated: March 2026)
The IGN review characterizes the Samsung Galaxy S21 as a refined, more affordable "second Fan Edition" rather than a groundbreaking flagship. Pros include a compact design with a "contour-cut" camera housing, alongside a variable 48-120Hz display that maintains smooth visuals. Performance is described as perfectly snappy for daily use and gaming, with a 4,000mAh battery lasting a full day. Conversely, the review highlights, as cons, the downgrade to a polycarbonate plastic back, the lack of a microSD card slot, and the removal of a charging brick from the box. The cameras, while reliable, offer minimal innovation over the S20, and the 30x Space Zoom feature is criticized for producing mostly unusable images. The device is ultimately framed as a strong but compromised option for those seeking a smaller Android flagship.
review highlights the G as an accessible, well-rounded flagship that balances high-tier performance with a practical design, despite using a plastic "Glasstic" rear and lacking the premium feel of previous models. Key strengths Hz display, powerful processor, and versatile camera features like Director's View, making it a strong contender in the Android market. However, drawbacks include a p screen, the removal of the charger and microSD slot, and a lack of significant innovation owners. +5
The ITPro review highlights the Samsung Galaxy S21 5G as a robust, high-quality flagship featuring a 6.2-inch Dynamic AMOLED display with a 120Hz refresh rate and a 64MP telephoto lens, offering a "submerging" user experience. Key pros include the versatile "Director’s View" camera feature and a durable, grippy design, although the matte plastic back feels less premium to some users. IT ProHowever, the device faces "cons" regarding its, at times, disappointing 16-hour and 39-minute battery life, the absence of a 3.5mm headphone jack, no microSD card slot for expandable storage, and the removal of the charger and earphones from the box. Despite these omissions and the lack of a stylus, the review concludes the Exynos 2100-powered phone is a treat, balancing performance with value.
The Samsung Galaxy S21 is described as a "small" 6.2-inch flagship featuring a comfortable, hand-friendly design, a durable plastic back, and a vibrant 120Hz AMOLED display. While the Snapdragon 888 processor delivers top-tier performance, a significant downside is its inconsistent battery life, lasting over 10 hours on Wi-Fi but draining faster on 5G, combined with the removal of expandable storage and the charger. The camera system offers improved, sharp 3x zoom and better color accuracy, though the 30x "Space Zoom" is not highly regarded.
In his Forbes review, Patrick Moorhead describes the Samsung Galaxy S21 5G as a significant "step forward" that refines the flagship experience while lowering the entry price by roughly $200. The device features a practical, flat 6.2-inch FHD+ display, a sleek "Contour Cut" camera design, and a 120Hz adaptive refresh rate as key pros. Performance is driven by 5nm processors, and the camera system offers improved white balance, stable 30x Space Zoom, and software enhancements like Director's View. Key drawbacks, or cons, include the switch to a "Glasstic" (plastic) back and the removal of the microSD card slot for expandable storage. Furthermore, the package excludes a charging brick and headphones, reflecting cost-saving measures. While the 4,000 mAh battery covers average daily use, it may drain quickly under intense 5G usage, and the phone lacks S-Pen support.
The Samsung Galaxy S21 5G is a high-performing, durable smartphone with an Excellent-rated 6.2-inch AMOLED display and a fast Snapdragon 888 processor. Its camera system is highly rated for color accuracy and sharpness, featuring "Director’s View" for simultaneous, multi-lens recording. However, the device lacks premium features found in the Ultra model, such as S Pen support and advanced telephoto zoom capabilities. Key drawbacks include a reduced 30-hour battery life compared to its predecessor, along with the exclusion of a charger and microSD card slot.
The TechRadar review describes the Samsung Galaxy S21 as a "value flagship" making compromises for a lower price, offering powerful performance and a versatile triple-lens camera despite not being the series' best model. Praised for its vibrant 120Hz display and improved fingerprint scanner, the phone includes new camera modes like Director’s View but lacks a microSD slot, a charger in the box, and features a plastic rear and downgraded screen resolution.
The DXOMARK review of the Samsung Galaxy S21 5G (Snapdragon) notes its balanced power management but limited battery endurance, typically providing 1.5 to 2 days of use. While offering excellent power efficiency during discharge and standby with minimal drain, it suffers from slow charging speeds and high consumption during intensive tasks like 5G streaming and gaming.
The Samsung Galaxy S21 5G, as reviewed by Moor Insights & Strategy, is described as a well-rounded flagship phone that successfully balances performance with a more accessible price point compared to earlier models. Key strengths include the integration of the powerful Snapdragon 888 chipset, a high-quality 6.2-inch 120Hz adaptive refresh rate display, a versatile triple-lens camera system with software enhancements like Director’s View, robust 5G connectivity, and a competitive $799 price that offers strong value in the high-end market. The review also notes trade-offs made to achieve the lower price, such as changing the back material from glass to "Glasstic" (reinforced polycarbonate), reducing screen resolution from QHD+ to FHD+, and removing the microSD card slot and the charging brick from the box. More information is available at Moor Insights & Strategy.
HotHardware's review describes the Samsung Galaxy S21 5G as a high-value flagship phone offering a balance of premium features at a lower $699 price point. While its Snapdragon 888 platform provides top performance, a noted con is thermal throttling during heavy use; other drawbacks include a 1080p display (down from previous models) and "softer" battery life under strenuous testing. Key pros highlighted are the device's 6.2-inch AMOLED display with a 120Hz adaptive refresh rate and an innovative Director's View mode for video. Despite some sacrifices like the lack of a microSD slot and no included charger, the review concludes these are acceptable trade-offs for a well-designed 5G device, ultimately awarding it an "Approved" rating for its value.
CNET describes the Samsung Galaxy S21 as a "no-brainer" upgrade due to its lower price point and refined design. While featuring a high-end Snapdragon 888 chip, a 120Hz AMOLED display, and enhanced camera software, it omits a microSD slot, charger, and headphones, and includes less RAM than its predecessor. The review notes that despite these trade-offs, the S21 successfully makes flagship 5G technology more accessible.
Pocketnow's review describes the Samsung Galaxy S21 as a "real Fan Edition" balancing flagship power with hardware compromises for value, featuring a flat 6.2-inch Dynamic AMOLED 2X display with an adaptive 120Hz refresh rate despite a downgraded FHD+ resolution. The device, powered by the Snapdragon 888 or Exynos 2100, handles tasks well but can heat up, while its camera system benefits from software improvements for impressive daylight photos and improved low-light results. Pros include a lower price, ergonomic design, and a faster fingerprint scanner, while cons are the plastic back, no microSD slot, and the absence of a charger or headphones in the box.
The Bluewin review characterizes the Samsung Galaxy S21 series as an evolution rather than a revolution, highlighting a bold, durable design with a wraparound metal camera bump. Key pros include the vivid 120Hz adaptive display, the powerful Snapdragon 888 processor ensuring smooth performance, and new camera features like Director's View. Conversely, notable cons stem from cost-cutting measures, specifically the removal of the microSD card slot and the exclusion of a charger and headphones. Furthermore, the standard S21 features a plastic back and lower Full HD+ resolution compared to previous models.
The Bouygues Telecom review of the Samsung Galaxy S21 highlights a refined design with a 6.2-inch flat display, featuring durable Gorilla Glass Victus and a practical polycarbonate back, supported by a fast, improved ultrasonic fingerprint sensor. The device features a 120Hz adaptive AMOLED screen with excellent brightness and color accuracy, while the Exynos 2100 processor delivers strong, lag-free performance, although the lack of a microSD card slot is a noted disadvantage. Photographically, the triple-lens system (12MP wide/ultra-wide, 64MP telephoto) offers high-quality imaging and features like Director’s View, with a 4,000 mAh battery that reliably lasts a full day under normal use.
The 01net review characterizes the Samsung Galaxy S21 as a high-end, compact 6.2-inch smartphone that offers excellent ergonomics, a lightweight, "Glasstic" design, and a distinct "Contour Cut" camera housing. Performance is driven by the efficient Exynos 2100 processor, delivering smooth, 120Hz AMOLED, full-HD+ display capabilities with significantly improved, software-enhanced, triple-camera photography. While the device shines in usability, it sacrifices some premium feel, lacks a microSD slot, removes in-box accessories, and provides only average battery life, ultimately balancing these compromises with a strong value proposition.
The Samsung Galaxy S21, reviewed by Phonandroid, prioritizes affordability and ergonomics over raw technical specs, featuring a compact design with a flat 6.2-inch display and a durable, if less premium, polycarbonate back. While performance is fluid due to the 120Hz display and advanced chipset, a significant downside is the reduction in screen resolution to 1080p, which may disappoint some users, though it helps battery longevity. The camera system delivers excellent, improved photo quality with a functional 3x telephoto lens, but the lack of a microSD card slot and removed charging brick represent notable drawbacks.
The Samsung Galaxy S21 is a compact, high-end smartphone featuring a 6.2-inch 120Hz Dynamic AMOLED 2X display that is both highly calibrated and ergonomically designed. It boasts top-tier performance powered by the Exynos 2100 chip, offering a robust 12MP main camera and IP68 water resistance. However, the device is limited by its sub-par battery life, the lack of a charger in the box, and a plastic rear panel, according to the review. Les Numé
According to the NextPit review, the Samsung Galaxy S21 stands out as a compact, lightweight flagship featuring a premium-feeling polycarbonate design and the powerful Exynos 2100 chipset. The 6.2-inch 120Hz Dynamic AMOLED display offers a fluid experience, although the camera system represents only an incremental, rather than groundbreaking, improvement. Notable drawbacks include poor battery life, the removal of microSD storage, and the omission of a charger in the box.
The Le Monde Informatique review characterizes the Samsung Galaxy S21 as a device with "perfectly mastered compromises," balancing high-end features with a more aggressive price point. Key concessions include a transition to a polycarbonate back and a flat Full HD+ display, which, however, do not significantly hinder the daily experience. The smartphone is lauded for its compact, ergonomic design and vibrant 120Hz adaptive AMOLED display. Performance is strong via the Snapdragon 888 or Exynos 2100 processors, complemented by a versatile camera suite featuring "Director's View". Drawbacks include the plastic build, removal of the microSD card slot, and the absence of a charger, alongside a reduction in base RAM compared to the S20. The cameras lack the extreme zoom capabilities of the S21 Ultra model.
The Samsung Galaxy S21 features a 6.2-inch 120Hz AMOLED display and a durable, lighter polycarbonate back, offering a high-quality feel despite the shift from glass. While the screen boasts excellent brightness, it is limited to Full HD+ resolution, a reduction from previous, more expensive models. Performance is driven by the Exynos 2100 chipset, delivering a responsive experience supported by the intuitive One UI 3.1, though the removal of microSD storage and included charger in the box are significant downsides. The camera system, featuring 12MP main/ultra-wide and 64MP telephoto lenses, excels in daylight, but the 30x zoom is considered more of a gimmick. Ultimately, the 4000 mAh battery provides a full day of use, making the phone a well-balanced but iterative, rather than revolutionary, upgrade.
The Samsung Galaxy S21, as reviewed by Frandroid, is a well-balanced flagship featuring a, lightweight design with a "Contour Cut" camera housing and a durable polycarbonate back. The 6.2-inch Dynamic AMOLED 2X display is highly praised for its brightness and 120Hz adaptive refresh rate, though it is limited to a 1080p resolution. Powered by the Exynos 2100 in Europe, the device delivers high-level performance, complemented by the polished One UI interface. The triple-camera setup, featuring a 12MP main sensor, 12MP ultra-wide, and 64MP telephoto, offers excellent, natural, and consistent photo results. While praised for its, screen, performance, and camera, the S21 faces criticism for switching to a plastic back, reducing screen resolution, removing the microSD slot, and excluding the wall charger from the box. Overall, the review positions it as a successful, user-friendly flagship.
The Labo Fnac test of the Samsung Galaxy S21 5G highlights a compact, ergonomic design featuring a vibrant 6.2-inch 120Hz display with high peak brightness. While the "Glasstic" back enhances durability, the reduction to 1080p resolution and the exclusion of a microSD slot or charger are notable downsides. Performance is strong, driven by the Exynos 2100 which handles demanding tasks, though intensive usage reduces the 4,000 mAh battery life. The camera system, including a 64MP telephoto lens, offers high-quality imaging with improved AI for contrast and skin tones. However, the telephoto is a crop-based zoom rather than a dedicated optical lens, and low-light video performance can exhibit noise. The device is ultimately framed as a value-oriented flagship for users prioritizing performance over premium materials.
The Le Bêta-Testeur review describes the Samsung Galaxy S21 as a refined, value-focused flagship featuring a distinct "contour-cut" design and a 120Hz adaptive display, balancing premium features with a, now plastic, build. While performance is top-tier with the Snapdragon 888 and the camera system offers versatile features like Director's View, the hardware is largely recycled from the previous year. Significant drawbacks for power users include the removal of the microSD card slot, the lack of an in-box charger, and a 4,000 mAh battery that offers only average endurance.
The Xataka review characterizes the Samsung Galaxy S21 series as a refined, more competitively priced evolution, featuring the Exynos 2100/Snapdragon 888 chip for improved thermal management and performance. Key advantages include the S21 Ultra's 120Hz WQHD+ display, S Pen support, and a more integrated camera design, though significant downsides include the removal of microSD slots, lack of in-box chargers, and a downgrade to FHD+ screens for the S21/S21+. Camera performance remains strong, with the S21 Ultra's dual-telephoto system and new software features like "Director's View" providing professional-level tools, while the standard S21 offers a compact, ergonomic option despite its polycarbonate back.
The Samsung Galaxy S21, a refined evolution of its predecessor, features a "Glasstic" matte finish and a "Contour Cut" camera module, balancing high-end specs with a more accessible price point. While the display resolution is lowered to FHD+, the 120Hz adaptive refresh rate and 1,300 nits peak brightness deliver a top-tier visual experience. Powered by the Exynos 2100, the device offers excellent performance and, despite unchanged camera hardware, benefits from software enhancements like Director's View for improved photography and content creation. However, the S21 compromises by removing the charger and headphones from the box and eliminating the microSD slot. The 4,000mAh battery provides sufficient daily use but may struggle under heavy 5G or gaming loads. The review concludes that while not a mandatory upgrade for S20 owners, the S21 is an excellent, compact flagship for users upgrading from older models.
The Samsung Galaxy S21 5G is characterized as a balanced, high-performance compact flagship with a fresh, durable design featuring a unique "Phantom Purple" color and a polycarbonate back. It boasts a top-tier 120Hz Dynamic AMOLED 2X display, an improved, faster ultrasonic fingerprint sensor, and powerful, fluid performance for daily tasks. Despite its strengths, the device compromises on longevity with only sufficient battery life and "underwhelming" 25W charging, alongside the removal of the MicroSD slot and included charger.
The Samsung Galaxy S21, as reviewed by SmartWorld, is highlighted as a compact, ergonomic, and lightweight Android flagship, featuring a 6.2-inch Dynamic AMOLED 2X display with an adaptive 120Hz refresh rate. While praising its performance, the review notes a controversial shift to a polycarbonate (plastic) back and a reduction in screen resolution to FullHD+. The device features an Exynos 2100 processor and a 4,000 mAh battery that provides adequate, though not stellar, battery life.
The iGizmo.it review defines the Samsung Galaxy S21 5G as a compact, high-performance device featuring an efficient Exynos 2100 processor and a 6.2-inch Dynamic AMOLED 2X display with a 120Hz refresh rate. The camera system is lauded for its 8K video capability and refined One UI 3.1 software, while the ergonomic, lightweight, and matte finish design is considered a major pro. Compromises noted in the review include the switch to a polycarbonate (plastic) back, a reduction to Full HD+ resolution, and the omission of a microSD slot and wall charger. Despite these drawbacks, the review concludes it is a well-balanced, affordable flagship, as discussed at iGizmo.it. iGizmo.it
The Samsung Galaxy S21 5G is reviewed as a "complete but not perfect" device, prioritizing compact, 6.2-inch ergonomics and a vibrant 120Hz AMOLED display over top-tier specs. Powered by the Exynos 2100 in Europe, the phone offers snappy performance, improved thermal management, and a versatile triple-camera system featuring enhanced Night Mode and Director’s View for creators. While the phone delivers a refined user experience, it features a controversial polycarbonate (plastic) back and lacks the premium feel of the S21 Ultra. Camera hardware remains largely consistent with the previous model, and the device lacks a microSD card slot and, notably, a charger in the box. Despite these sacrifices in resolution and accessories, it is positioned as a solid, well-rounded option aimed at practical users seeking a more accessible flagship price point.
In his review, Andrea Galeazzi defines the Samsung Galaxy S21 as a balanced, compact flagship featuring a 6.2-inch flat 120Hz AMOLED display and a plastic back that feels premium while keeping weight down to 169g. Performance is driven by the efficient Exynos 2100 processor, offering high-speed operation and significantly better thermal management than its predecessor, alongside improved, full-day battery life. While the camera setup is considered excellent for daily use, it lacks a true optical zoom and falls short of the Ultra model's hardware. Key drawbacks highlighted in the review include the absence of a charger or headphones in the box and the lack of expandable microSD storage. Ultimately, the S21 is recommended for users prioritizing ergonomics, speed, and a high-quality, flat display.
The GalaxyClub.nl review characterizes the Samsung Galaxy S21 as a strategic, competitively priced device featuring a refined 120Hz display, a highly improved, larger in-display fingerprint scanner, and the powerful Exynos 2100 processor. Key pros include its compact, ergonomic design, improved camera software, and a 120Hz display that effectively balances performance with power efficiency. Conversely, the S21 compromises by removing the microSD card slot, excluding a charger and headphones, and utilizing a polycarbonate back, while the 4000 mAh battery may fall short for heavy users.
The Techzine review positions the Samsung Galaxy S21 as a refined, high-end smartphone offering a strong balance between premium features and a more accessible price point. Key design elements include a distinctive, waterproof "two-tone" frame and a durable plastic back panel. Performance is driven by the efficient Exynos 2100 processor, while the 6.2-inch 120Hz AMOLED display provides a fluid experience, despite the reduction to a Full HD+ resolution. Pros highlighted in the review include the striking design, powerful performance, and extensive software support. However, the device is held back by the lack of a microSD slot for storage expansion, the absence of a charger in the box, and a lower screen resolution compared to its predecessor. The camera system is rated as solid and reliable, though it does not top the market in absolute performance.
The Android Planet review characterizes the Samsung Galaxy S21 as a "refined entry-level" flagship, balancing performance with strategic hardware choices. Key highlights include a vibrant 6.2-inch AMOLED display with an adaptive 120Hz refresh rate and the powerful Exynos 2100 chipset, which offers significant speed and thermal improvements. While the camera system is bolstered by intelligent software, drawbacks include a plastic back, the removal of microSD storage, and a missing charging brick. The device is praised for its compact, ergonomic design and competitive pricing, making it a strong, practical choice for many users. Although it may not be a necessary upgrade for S20 owners, it serves as a robust option for users coming from older devices, offering reliable battery life and a responsive, flat screen.
Tweakers reviews of the Samsung Galaxy S21 5G highlight the device as a refined, compact flagship balancing high-end performance with a more accessible price point. Key pros include the fast Exynos 2100/Snapdragon 888 chipset and the vibrant 120Hz AMOLED display. However, the move to a polycarbonate back and the omission of a microSD card slot are considered drawbacks. The camera system is praised for producing excellent, detailed images, particularly with the improved Night Mode and versatile 64MP telephoto lens. While the compact design is lauded for one-handed usability, the 1080p resolution is viewed by some as a downgrade from previous models. Battery life is adequate for daily use, though it can struggle under heavy 5G usage. Overall, the S21 5G is characterized as a strong, versatile smartphone that prioritizes daily performance over premium materials. Despite lacking a charger in the box and a higher-resolution screen, it remains a highly regarded, functional choice within the Samsung lineup.
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