Samsung Galaxy S21 Plus vs Samsung Galaxy S21 Ultra
Our Verdict: The Galaxy S21 Plus and Galaxy S21 Ultra launched together in 2021: the S21+ 5G is the standard model and the S21 Ultra 5G the higher-end one. The S21 Ultra 5G has the better camera on paper, 108MP versus 64MP, plus a 40MP selfie camera against 10MP, and the S21 Ultra 5G goes up to 512GB of storage, where the S21+ 5G tops out at 256GB. The S21 Ultra 5G has the sharper display at 516 PPI to 393, and the S21+ 5G is the lighter phone at 202g against 228g. The S21 Ultra 5G is the one to have if you want what it adds, but the S21+ 5G is the smarter buy if you'd rather keep the money.
Buying outright, the S21+ 5G starts at £175 SIM-free.
10 reviews 4.4
10 reviews
Prices updated 12 July 2026
Samsung Galaxy S21 Plus
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Samsung Galaxy S21 Ultra
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|---|---|---|
| Expert Rating | 4.0 10 reviews |
4.4 10 reviews |
| Screen | 6.7" | 6.8" |
| Display | Dynamic AMOLED 2X | Dynamic AMOLED 2X capacitive touchscreen |
| Resolution | 1080 x 2400 | 1440 x 3200 |
| Pixels Per Inch | 393 | 516 |
| Rear Camera | 64 Megapixels | 108 Megapixels |
| Front Camera | 10 Megapixels | 40 Megapixels |
| Chipset | Exynos 2100 | Exynos 2100 |
| Battery | 4,800 mAh | 5,000 mAh |
| Storage | 128GB, 256GB | 128GB, 256GB, 512GB |
| OS | Android 11 | Android 11 |
| SIM Type | Standard SIM | Nano SIM |
| Connectivity | Up to 5G | Up to 5G |
| Wi-Fi | 802.11 a/b/g/n/ac/6e | 802.11 a/b/g/n/ac/6 |
| Bluetooth | 5.0, A2DP, LE | 5.1 with A2DP, LE |
| Dimensions | 161.4 x 75.6 x 7.8 mm | 165.1 x 75.6 x 8.9 mm |
| Weight | 202 grams | 228 grams |
| Water Resistance | IP68 - Dust and water resistant over 1.5 meter and 30 minutes | IP68 - Dust and water resistant over 1.5 meter and 30 minutes |
| Contracts | - | - |
| SIM-free | £174.99 | £209.99 |
| Prices updated 12 July 2026 | ||
| Deals | Deals | |
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Frequently Asked Questions
Which has the better screen, the Samsung Galaxy S21 Plus or Samsung Galaxy S21 Ultra?
Both phones have a similar screen size at around 6.7", the Samsung Galaxy S21 Ultra has the sharper display at 516 pixels per inch versus 393, and the Samsung Galaxy S21 Plus 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 Plus or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 Plus 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 Plus or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 Plus is cheaper SIM-free, starting from £174.99.
What storage options are available for the Samsung Galaxy S21 Plus and Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 Plus is available in 128GB, 256GB, while the Samsung Galaxy S21 Ultra comes in 128GB, 256GB, 512GB.
What processors do the Samsung Galaxy S21 Plus and Samsung Galaxy S21 Ultra use?
The Samsung Galaxy S21 Plus 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 Plus or Samsung Galaxy S21 Ultra?
The Samsung Galaxy S21 Plus is the more portable of the two: it's 26g lighter at 202 grams, it's also the more compact phone at 161.4 x 75.6 x 7.8 mm, and is slimmer at 7.8mm thick.
Which is more water resistant, the Samsung Galaxy S21 Plus or Samsung Galaxy S21 Ultra?
Both phones share the same water resistance rating of IP68 - Dust and water resistant over 1.5 meter and 30 minutes.
What operating system do the Samsung Galaxy S21 Plus and Samsung Galaxy S21 Ultra run?
Both phones run Android 11.