Samsung Galaxy S21 Ultra
- Screen: 6.8" Dynamic AMOLED - 1440 x 3200
- SoC: Samsung Exynos 2100
- Camera: 4 (108 MP + 10 MP + 10 MP + 12 MP)
- Battery: 5000 mAh
- OS: Android 15
- Weight: 227 grams (8.01 oz)
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Review
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Full specifications
Detailed specifications, tests, and benchmarks of the Samsung Galaxy S21 UltraDisplay
| Type | Dynamic AMOLED |
| Size | 6.8 inches |
| Resolution | 1440 x 3200 pixels |
| Aspect ratio | 20:9 |
| PPI | 515 ppi |
| Refresh rate | 120 Hz |
| Adaptive refresh rate | Yes (10-120 Hz) |
| Max rated brightness | 1500 nits |
| HDR support | Yes, HDR10+ |
| Screen protection | Gorilla Glass Victus |
| Screen-to-body ratio | 89.5% |
| Display features | - DCI-P3 - Always-On Display |
Design and build
| Height | 165.1 mm (6.5 inches) |
| Width | 75.6 mm (2.98 inches) |
| Thickness | 8.9 mm (0.35 inches) |
| Weight | 227 g (8.01 oz) |
| Waterproof | IP68 |
| Rear material | Glass |
| Frame material | Metal |
| Colors | Black, Silver, Gray, Blue |
| Fingerprint scanner | Yes, in-display |
Performance
| Chipset | Samsung Exynos 2100 |
| Max clock | 2900 MHz |
| CPU cores | 8 (1 + 3 + 4) |
| Architecture | - 4 cores at 2.2 GHz: Cortex-A55 - 3 cores at 2.81 GHz: Cortex-A78 - 1 core at 2.91 GHz: Cortex-X1 |
| Manufacturing | Samsung |
| Lithography process | 5 nanometers |
| Neural processor (NPU) | Yes |
| Graphics | Mali-G78 MP14 |
| GPU shading units | 448 |
| GPU clock | 854 MHz |
| FLOPS | ~765.2 GFLOPS |
Benchmarks
| Compute Score (GPU) | 6870 |
| Single-core score | 1486 |
| Multi-core score | 3800 |
| CPU | 420330 |
| GPU | 186151 |
| Memory | 193925 |
| UX | 273776 |
| Total score | 1074182 |
Recent User Tests
| Date | Benchmark | Result |
|---|---|---|
| π 2026-09-30 -> fh_hxx19 | AnTuTu 12 | 1191592 |
| π 2026-09-30 -> fh_hxx19 | AnTuTu 12 | 1191592 |
| π 2026-07-22 (Squizzyyy) | AnTuTu 11 | 857016 |
| π 2026-06-02 (My name) | AnTuTu 11 | 1271841 |
| π 2026-06-02 (Tim) | AnTuTu 11 | 1213515 |
| π 2026-01-18 (Adhamious) | AnTuTu 11 | 1123155 |
| π 2025-12-31 (onegear) | AnTuTu 11 | 1074182 |
| π 2025-12-18 (Alyas) | Geekbench 6 CPU | 1513 / 4101 |
Memory
| RAM size | 8 GB |
| Memory type | LPDDR5 |
| Memory clock | 2750 MHz |
| Channels | 2 |
| Storage size | 128 GB |
| Storage type | UFS 3.1 |
| Memory card | No |
Software
| Operating system | Android 11 (Can be upgraded to Android 15) |
| ROM | One UI 7.0 |
| OS size | 26.4 GB |
| OS updates | 2 years |
| Security updates | 4 years |
Battery
| Capacity | 5000 mAh |
| Max charge power | 25 W |
| Battery type | Li-Ion |
| Replaceable | No |
| Wireless charging | Yes (15 W) |
| Reverse charging | Yes, (wireless) |
| Fast charging | Yes (54% in 30 min) |
| Full charging time | 1:11 hr |
| Web browsing | 07:58 hr |
| Watching video | 13:59 hr |
| Gaming | 05:14 hr |
| Standby | 111 hr |
Main camera
| Matrix | 108 megapixels |
| Image resolution | 12000 x 9000 |
| Zoom | Optical, 10x |
| Flash | Dual LED |
| Stabilization | Optical |
| 8K video recording | Up to 24FPS |
| 4K video recording | Up to 60FPS |
| 1080p video recording | Up to 60FPS |
| Slow motion | 960 FPS (720p) |
| Angle of widest lens | 120Β° |
| Lenses | 1) Standard: 108 MP 2) Telephoto: 10 MP 3) Telephoto: 10 MP 4) Ultrawide: 12 MP |
| Camera features | - Bokeh mode - Pro mode - RAW support |
| Image resolution | 108 MP |
| Aperture | f/1.8 |
| Focal length | 26 mm |
| Sensor | Samsung S5KHM3 |
| Sensor size | 1/1.33" (β 0.75 inch) |
| Pixel size | 0.8 micron |
| Autofocus | Laser autofocus |
| Stabilization | Optical |
| Image resolution | 10 MP |
| Aperture | f/4.9 |
| Focal length | 240 mm |
| Sensor | Samsung S5K3J1 |
| Sensor size | 1/2.65" (β 0.38 inch) |
| Pixel size | 1.22 micron |
| Stabilization | Optical |
| Image resolution | 12 MP |
| Aperture | f/2.2 |
| Focal length | 13 mm |
| Sensor | Sony IMX563 |
| Sensor size | 1/2.55" (β 0.39 inch) |
| Pixel size | 1.4 micron |
| Stabilization | Digital |
DxOMark main camera tests
| Bokeh | 70 |
| Preview | 67 |
| Zoom | 106 |
| Samples | Photo samples of Samsung Galaxy S21 Ultra from DxOMark |
Selfie camera
| Megapixels | 40 megapixels |
| Image resolution | 7864 x 5200 |
| Aperture | f/2.2 |
| Focal length | 26 mm |
| Sensor | Samsung S5KGH1 |
| Sensor size | 1/2.65" (β 0.38 inch) |
| Pixel size | 0.7 micron |
| Autofocus | Phase autofocus |
| Stabilization | Digital |
| Video resolution | 2160p (4K) at 60 FPS |
| Depth sensor (TOF 3D) | No |
| Photo | 133 |
| Video | 140 |
Connectivity
| Wi-Fi standard | Wi-Fi 6E (802.11 a/b/g/n/ac/ax) |
| Wi-Fi features | - Dual Band - Wi-Fi MiMO - Wi-Fi Direct - Wi-Fi Hotspot - Wi-Fi Display |
| Bluetooth version | 5.2 |
| Bluetooth features | LE, A2DP |
| USB type | USB Type-C |
| USB version | 3.2 |
| USB features | - Charging - USB-Storage mode - USB-Host mode - OTG |
| GPS | GPS, GLONASS, Beidou, Galileo |
| NFC* | Yes |
| Infrared port | No |
| Number of SIM* | 2 |
| Type of SIM card | Nano |
| Multi SIM mode | Standby |
| eSIM support* | Yes |
| Hybrid slot | No |
| LTE Cat* | 24 |
| 2G network | GSM 850, 900, 1800, 1900 MHz |
| 3G network | WCDMA Band 1, 2, 4, 5, 8 |
| 4G network | LTE 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 |
| 5G support | Yes |
Sound
| Speakers | Stereo |
| Headphone audio jack | No |
| FM radio | No |
| Dolby Atmos | Yes |
Speakers test
Other
| Category | Flagship |
| Announced | January 2021 |
| Release date | February 2021 |
| Launch price (MSRP) | $1200 |
| Successor | - Samsung Galaxy S22 Ultra |
| SAR (head) | 0.71 W/kg |
| SAR (body) | 1.58 W/kg |
| Sensors | - Hall-effect sensor - Barometer - Proximity sensor - Gyroscope - Accelerometer - Ambient light sensor - Compass - Fingerprint |
*Disclaimer! Some specifications of the Galaxy S21 Ultra may differ by country or region
