The Samsung Galaxy S21 5G arrived in January 2021 as the entry point into Samsung’s flagship line, and years on it has quietly become one of the smartest value picks in the used and refurbished market. With a compact 6.2-inch body, a 120Hz Dynamic AMOLED 2X panel, and a versatile triple camera anchored by a 64MP telephoto sensor, it still delivers a premium experience that many current mid-rangers struggle to match. Priced now around € 204.00 / $ 167.98 / £ 169.00, it reads more like a bargain than a former €849 flagship.
This article looks at the Galaxy S21 5G from a value-per-dollar angle rather than as a brand-new release. We break down where its Exynos 2100 or Snapdragon 888 hardware still holds up in 2026, where age shows, and which buyers get the most out of it. If you want a small, fast, IP68-rated Samsung flagship without paying flagship money, this is a phone worth understanding in detail.
Full Specifications
Network
| Technology: | GSM / CDMA / HSPA / EVDO / LTE / 5G |
| 2G bands: | GSM 850 / 900 / 1800 / 1900 |
| CDMA 800 / 1900 & TD-SCDMA | |
| 3G bands: | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| CDMA2000 1xEV-DO | |
| 4G bands: | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 – SM-G991U1 |
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 – SM-G991B | |
| 5G bands: | 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave – SM-G991U1 |
| 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 – SM-G991B | |
| Speed: | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL) |
Launch
| Announced: | 2021, January 14 |
| Status: | Available. Released 2021, January 29 |
Body
| Dimensions: | 151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in) |
| Weight: | 169 g (Sub6), 171 g (mmWave) (5.96 oz) |
| Build: | Glass front (Gorilla Glass Victus), plastic back, aluminum frame |
| SIM: | Nano-SIM + eSIMNano-SIM + Nano-SIM + eSIM (max 2 at a time) |
| IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) |
Display
| Type: | Dynamic AMOLED 2X, 120Hz, HDR10+, 1300 nits (peak) |
| Size: | 6.2 inches, 94.1 cm2 (~87.2% screen-to-body ratio) |
| Resolution: | 1080 x 2400 pixels, 20:9 ratio (~421 ppi density) |
| Protection: | Corning Gorilla Glass Victus |
Platform
| OS: | Android 11, up to 4 major Android upgrades, One UI 6.1 |
| Chipset: | Exynos 2100 (5 nm) – InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) – USA/China |
| CPU: | Octa-core (1×2.9 GHz Cortex-X1 & 3×2.80 GHz Cortex-A78 & 4×2.2 GHz Cortex-A55) – InternationalOcta-core (1×2.84 GHz Cortex-X1 & 3×2.42 GHz Cortex-A78 & 4×1.80 GHz Cortex-A55) – USA/China |
| GPU: | Mali-G78 MP14 – InternationalAdreno 660 – USA/China |
Memory
| Card slot: | No |
| Internal: | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM |
| UFS 3.1 |
Main Camera
| Triple: | 12 MP, f/1.8, 26mm (wide), 1/1.76″, 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72″, 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55″ 1.4µm, Super Steady video |
| Features: | LED flash, auto-HDR, panorama |
| Video: | 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS |
Selfie camera
| Single: | 10 MP, f/2.2, 26mm (wide), 1/3.24″, 1.22µm, dual pixel PDAF |
| Features: | HDR |
| Video: | 4K@30/60fps, 1080p@30fps |
Sound
| Loudspeaker: | Yes, with stereo speakers |
| 3.5mm jack: | No |
| 32-bit/384kHz audio Tuned by AKG |
Comms
| WLAN: | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| Bluetooth: | 5.0, A2DP, LE |
| Positioning: | GPS, GLONASS, BDS, GALILEO |
| NFC: | Yes |
| Radio: | FM radio (Snapdragon model only; market/operator dependent) |
| USB: | USB Type-C 3.2, OTG |
Features
| Sensors: | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
| Samsung DeX, Samsung Wireless DeX (desktop experience support) Circle to Search |
Battery
| Type: | Li-Ion 4000 mAh |
| Charging: | 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless |
Misc
| Colors: | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink |
| Models: | SM-G991B, SM-G991B/DS, SM-G991U, SM-G991U1, SM-G991W, SM-G991N, SM-G9910, SM-G991Q, SCG09 |
| SAR: | 0.74 W/kg (head) 1.08 W/kg (body) |
| SAR EU: | 0.46 W/kg (head) 1.51 W/kg (body) |
| Price: | € 204.00 / $ 167.98 / £ 169.00 |
Our Tests
| Performance: | AnTuTu: 584055 (v8) GeekBench: 3238 (v5.1) GFXBench: 60fps (ES 3.1 onscreen) |
| Display: | 856 nits max brightness (measured) |
| Camera: | Photo / Video |
| Loudspeaker: | -26.4 LUFS (Good) |
| Battery (old): | Endurance rating 93h |
Price and Availability
The Samsung Galaxy S21 5G offers a compelling combination of features and performance. While the base price is around €204, the actual cost may vary depending on your location and retailer. Below, you’ll find the approximate price of the Samsung Galaxy S21 5G converted into various currencies. Please note that these are estimates based on recent exchange rates as of July 8, 2026 and may not reflect the exact price you’ll find at a retailer.
- United States: $233
- Japan: ¥37,759
- United Kingdom: £174
- Australia: A$336
- Canada: C$331
- Taiwan: NT$7,483
- Denmark: kr1.523
- Saudi Arabia: ﷼874
- South Korea: ₩353,808
- Germany: €204
- Brazil: R$1.199
- Vietnam: ₫6.107.917
- Kenya: KSh 30,137
- India: ₹22,131
- Indonesia: Rp 4.182.263
- Nigeria: ₦317,369
- Pakistan: ₨64,776
- Philippines: ₱14,319
- Bangladesh: ৳২৮,৬৯৭
Why the Galaxy S21 5G Is a Value Standout
The strongest argument for the Galaxy S21 5G today is what you get for the money. For roughly the price of a fresh budget phone, you inherit genuine 2021 flagship hardware: an aluminum frame, Gorilla Glass Victus front, IP68 water and dust resistance, an ultrasonic under-display fingerprint sensor, and a high-refresh AMOLED display. Very few phones near this price offer that combination of durability and refinement. Against current entry-level rivals, the S21 5G typically wins on screen quality, camera flexibility, and build, which is exactly why it remains a popular refurbished recommendation.
Compact Design That Still Feels Premium
At 151.7 x 71.2 x 7.9 mm and 169 g, the Galaxy S21 5G is refreshingly small by modern standards. The matte plastic back on this model is more practical than it sounds: it resists fingerprints, shrugs off minor knocks, and keeps the weight down without feeling cheap thanks to the metal frame wrapping around it. The contour-cut camera housing and Phantom Gray, White, Violet, and Pink finishes still look distinctive. For anyone tired of oversized 6.7-inch slabs, this is one of the last truly one-hand-friendly flagship-class Samsung phones.
A Display That Punches Above Its Price
The 6.2-inch Dynamic AMOLED 2X panel is the highlight of the everyday experience. It runs at up to 120Hz for fluid scrolling, supports HDR10+, and carries a 1080 x 2400 resolution at roughly 421 ppi. Samsung quotes a 1300-nit peak, and independent testing measured around 856 nits of usable brightness, which is plenty for most indoor and outdoor use. Colors are punchy, blacks are deep, and the adaptive refresh rate helps balance smoothness against battery drain. It remains a genuinely excellent screen in this price bracket.
Performance: Exynos 2100 and Snapdragon 888 in 2026
Depending on region, the S21 5G ships with the Exynos 2100 or the Snapdragon 888, both built on a 5nm process with a Cortex-X1 prime core. In benchmarks the phone posted an AnTuTu score around 584,000 and a GeekBench 5 multi-core result near 3,238, figures that still comfortably clear the demands of daily apps, multitasking, and mainstream gaming. Paired with fast UFS 3.1 storage and up to 8GB of RAM, it stays responsive. The main caveat is thermals: both chipsets can warm up under sustained load, so extended gaming sessions will throttle. For everyday use, though, it rarely feels slow.
Camera System: Small Sensors, Smart Results
The triple camera pairs a 12MP wide, a 12MP ultrawide, and a 64MP telephoto sensor that delivers 3x hybrid zoom and doubles for high-resolution capture. Samsung’s processing leans toward bright, contrast-rich images that look great on the display and on social feeds. Video is a clear strength for the price, with 8K at 24fps, 4K up to 60fps, and steady gyro-EIS stabilization. Low-light shots trail newer phones with larger sensors, and there is no dedicated periscope, so long-range zoom is limited. Even so, the system is more versatile than almost anything else at this cost.
Battery and Charging Realities
The 4000 mAh battery is the most dated part of the package. It earned an endurance rating of around 93 hours in older testing, which translates to comfortable single-day use for average owners but rarely more. Charging tops out at 25W wired, plus 15W wireless and 4.5W reverse wireless, and no charger is included in the box. A used unit may also show battery wear, so factor in a possible replacement over time. Buyers who prioritize all-day-plus endurance should weigh this carefully against the phone’s other strengths.
Software Support and Longevity
The Galaxy S21 5G launched on Android 11 and was promised up to four major OS upgrades along with security patches, taking it through One UI updates well beyond its debut. That long support window is a big reason it remains recommendable today: features like Samsung DeX, an extensive settings suite, and ongoing security fixes keep the software feeling current. Prospective buyers should confirm the exact patch level on any specific unit, since update availability can vary by model and region, but the platform overall has aged gracefully.
Connectivity and Everyday Extras
Connectivity is thorough for the class, with 5G (Sub6, and mmWave on US variants), Wi-Fi 6, Bluetooth 5.0, NFC, and USB Type-C 3.2 with OTG. Stereo speakers tuned by AKG sound clean, and the ultrasonic fingerprint reader is fast and reliable. The trade-offs are typical of the era: no microSD expansion, no 3.5mm headphone jack, and FM radio only on select Snapdragon units. Storage options of 128GB or 256GB cover most needs, but the lack of a card slot means choosing capacity carefully at purchase.
Conclusion
The Samsung Galaxy S21 5G has aged into an excellent value proposition: a compact, well-built flagship with a superb 120Hz AMOLED screen, capable cameras, long software support, and full IP68 durability, all at a price that now rivals ordinary mid-rangers. Its main compromises are middling battery capacity, no expandable storage, and chipsets that run warm under heavy load. If you want a small, premium-feeling Samsung phone for everyday use and value refinement over marathon battery life, a well-maintained S21 5G is a smart buy; heavy gamers and endurance-first users should look at a newer model with a larger battery instead.
References
- Samsung Galaxy S21 5G official product page – Official Samsung source for Galaxy S21 5G product facts such as display, cameras, battery, design, colors, and storage options.
- Samsung Semiconductor Exynos 2100 – Official chipset reference for Exynos 2100 variants of the Galaxy S21 5G, including CPU, GPU, modem, display, camera, and video capabilities.
- Qualcomm Snapdragon 888 5G Mobile Platform – Official chipset reference for Snapdragon 888 variants of the Galaxy S21 5G, useful for verifying processor, connectivity, AI, camera, and video capability claims.
- FCC Equipment Authorization Search – Official US regulator database for confirming certified Samsung Galaxy S21 5G model variants, FCC IDs, wireless radios, and SAR-related filings.
- GSMArena Samsung Galaxy S21 5G specifications – Established phone specification database useful as a secondary cross-check for dimensions, display, cameras, memory, battery, network bands, and launch details.
