Samsung Galaxy S21 vs Samsung Galaxy S21 Ultra
Buying outright, the S21 5G starts at £145 SIM-free.
10 reviews 4.4
10 reviews
Prices updated 29 July 2026
Samsung Galaxy S21
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Samsung Galaxy S21 Ultra
|
|
|---|---|---|
| Expert Rating | 4.1 10 reviews |
4.4 10 reviews |
| Screen | 6.2" | 6.8" |
| Display | Dynamic AMOLED 2X | Dynamic AMOLED 2X capacitive touchscreen |
| Resolution | 1080 x 2400 | 1440 x 3200 |
| Pixels Per Inch | 424 | 516 |
| Rear Camera | 64 Megapixels | 108 Megapixels |
| Front Camera | 10 Megapixels | 40 Megapixels |
| Chipset | Exynos 2100 | Exynos 2100 |
| Battery | 4,000 mAh | 5,000 mAh |
| Storage | 128GB, 256GB | 128GB, 256GB, 512GB |
| OS | Android 11 | Android 11 |
| SIM Type | Nano SIM | Nano SIM |
| Connectivity | Up to 5G | Up to 5G |
| Wi-Fi | 802.11 a/b/g/n/ac/6 | 802.11 a/b/g/n/ac/6 |
| Bluetooth | 5.0 with A2DP, LE | 5.1 with A2DP, LE |
| Dimensions | 151.7 x 71.2 x 7.9 mm | 165.1 x 75.6 x 8.9 mm |
| Weight | 171 grams | 228 grams |
| Water Resistance | IP53 - dust and splash protection | IP68 - Dust and water resistant over 1.5 meter and 30 minutes |
| Contracts | - | - |
| SIM-free | £144.99 | £234.99 |
| Prices updated 29 July 2026 | ||
| Deals | Deals | |
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Frequently Asked Questions
Which has the better screen, the Samsung Galaxy S21 or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 Ultra has the bigger screen at 6.8" compared to the Samsung Galaxy S21's 6.2", the Samsung Galaxy S21 Ultra has the sharper display at 516 pixels per inch versus 424, and the Samsung Galaxy S21 uses a Dynamic AMOLED 2X panel while the Samsung Galaxy S21 Ultra has a Dynamic AMOLED 2X capacitive touchscreen.
Which has the better camera, the Samsung Galaxy S21 or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 features a 64 Megapixels rear camera, while the Samsung Galaxy S21 Ultra has a 108 Megapixels rear camera. Both devices also have front-facing cameras for selfies and video calls.
Which is cheaper to buy SIM-free, the Samsung Galaxy S21 or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 is cheaper SIM-free, starting from £144.99.
What storage options are available for the Samsung Galaxy S21 and Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 is available in 128GB, 256GB, while the Samsung Galaxy S21 Ultra comes in 128GB, 256GB, 512GB.
What processors do the Samsung Galaxy S21 and Samsung Galaxy S21 Ultra use?
The Samsung Galaxy S21 is powered by the Exynos 2100, while the Samsung Galaxy S21 Ultra uses the Exynos 2100.
Which is easier to carry and hold, the Samsung Galaxy S21 or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 is the more portable of the two: it's 57g lighter at 171 grams, it's also the more compact phone at 151.7 x 71.2 x 7.9 mm, and is slimmer at 7.9mm thick.
Which is more water resistant, the Samsung Galaxy S21 or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 is rated IP53 - dust and splash protection, while the Samsung Galaxy S21 Ultra is rated IP68 - Dust and water resistant over 1.5 meter and 30 minutes.
What operating system do the Samsung Galaxy S21 and Samsung Galaxy S21 Ultra run?
Both phones run Android 11.