Refurbished prices
Spec sheets side by side
Only the details that appear on both models' spec sheets are shown.
| Detail | Galaxy S21 | Galaxy S21 Ultra |
|---|---|---|
| Launch | ||
| Announced | January 14, 2021 | January 14, 2021 |
| Released | January 29, 2021 | January 29, 2021 |
| Launch OS | Android 11 | Android 11 |
| Display | ||
| Size | 6.2 in | 6.8 in |
| Type | Dynamic AMOLED 2X Infinity-O | Dynamic AMOLED 2X Infinity-O |
| Resolution | 2400x1080 | 3200x1440 |
| Refresh rate | 120 Hz | 120 Hz |
| Performance | ||
| RAM | 8 GB | 12 GB / 16 GB |
| Storage | 128 GB / 256 GB | 128 GB / 256 GB / 512 GB |
| Cameras | ||
| Rear camera | 12 MP (Wide, Dual Pixel AF, OIS, F1.8, FOV 79deg), 12 MP (Ultra-Wide, F2.2, FOV 120deg), 64 MP (Telephoto, 3x hybrid optic zoom, OIS, F2.0, FOV 76deg) | 108 MP (Wide, Phase Detection AF, OIS, F1.8, FOV 83deg), 12 MP (Ultra-Wide, Dual Pixel AF, F2.2, FOV 120deg), 10 MP (Telephoto, 3x optical zoom, OIS, F2.4, FOV 35deg), 10 MP (Telephoto, 10x optical zoom, OIS, F4.9, FOV 10deg) |
| Front camera | 10 MP | 40 MP |
| Battery and charging | ||
| Capacity | 4,000 mAh | 5,000 mAh |
| Body | ||
| Dimensions | 151.7 x 71.2 x 7.9 mm | 165.1 x 75.6 x 8.9 mm |
| Weight | 169 g | 229 g |
| Connectivity | ||
| 5G | Yes | Yes |
| 5G mmWave | No | Yes |
| Wi-Fi | Wi-Fi 6 (HyperFast Wi-Fi) | Wi-Fi 6E |
| NFC | Yes | Yes |
| Port | USB-C | USB-C |
| Headphone jack | No | No |
| More details | ||
| Biometrics | Ultrasonic fingerprint sensor, Face recognition | Ultrasonic fingerprint sensor, Face recognition |
Which one to pick
These lines come only from the data on this page. You decide based on your budget and what you do with the phone.
Galaxy S21 Ultra has the bigger battery, 5,000 mAh against 4,000 mAh.
Spec sheet sources
Galaxy S21
- Make Every Day Epic with Samsung Galaxy S21 and Galaxy S21+ - Samsung US Newsroom · September 28, 2026
Galaxy S21 Ultra