Samsung Galaxy S21 Ultra vs Samsung Galaxy S24+
Our Verdict: The Galaxy S21 Ultra and the Galaxy S24+ are three years apart, which is enough for a real difference. The S21 Ultra 5G leads on camera hardware with a 108MP main sensor to the S24+'s 50MP, plus a 40MP selfie camera against 12MP, and the S24+ is the lighter phone at 196g against 228g. Only the S21 Ultra 5G has a water-resistance rating (IP68); the S24+ has none. If you're on the S21 Ultra 5G, the S24+ is a real step up, but only worth it if the changes above matter to you.
Buying outright, the S21 Ultra 5G starts at £235 SIM-free.
10 reviews 4.2
12 reviews
Prices updated 28 July 2026
Samsung Galaxy S21 Ultra
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Samsung Galaxy S24+
|
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|---|---|---|
| Expert Rating | 4.4 10 reviews |
4.2 12 reviews |
| Screen | 6.8" | 6.7" |
| Display | Dynamic AMOLED 2X capacitive touchscreen | Dynamic LTPO AMOLED 2X |
| Resolution | 1440 x 3200 | 1440 x 3088 |
| Pixels Per Inch | 516 | 509 |
| Rear Camera | 108 Megapixels | 50 Megapixels |
| Front Camera | 40 Megapixels | 12 Megapixels |
| Chipset | Exynos 2100 | Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm) |
| Battery | 5,000 mAh | 4,900 mAh |
| Storage | 128GB, 256GB, 512GB | 256GB, 512GB |
| OS | Android 11 | Android |
| 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/6e/7 |
| Bluetooth | 5.1 with A2DP, LE | 5.3 with A2DP, LE |
| Dimensions | 165.1 x 75.6 x 8.9 mm | 158.5 x 75.9 x 7.7 mm |
| Weight | 228 grams | 196 grams |
| Water Resistance | IP68 - Dust and water resistant over 1.5 meter and 30 minutes | Not rated |
| Contracts | - |
£71.50/mo
£30.00 upfront |
| SIM-free | £234.99 | £329.99 |
| Prices updated 28 July 2026 | ||
| Deals | Deals | |
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Frequently Asked Questions
Which has the better screen, the Samsung Galaxy S21 Ultra or Samsung Galaxy S24+?
Both phones have a similar screen size at around 6.8", both screens are similarly sharp at around 516 pixels per inch, and the Samsung Galaxy S21 Ultra uses a Dynamic AMOLED 2X capacitive touchscreen panel while the Samsung Galaxy S24+ has a Dynamic LTPO AMOLED 2X.
Which has the better camera, the Samsung Galaxy S21 Ultra or Samsung Galaxy S24+?
The Samsung Galaxy S21 Ultra features a 108 Megapixels rear camera, while the Samsung Galaxy S24+ has a 50 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 Ultra or Samsung Galaxy S24+?
The Samsung Galaxy S21 Ultra is cheaper SIM-free, starting from £234.99.
What storage options are available for the Samsung Galaxy S21 Ultra and Samsung Galaxy S24+?
The Samsung Galaxy S21 Ultra is available in 128GB, 256GB, 512GB, while the Samsung Galaxy S24+ comes in 256GB, 512GB.
What processors do the Samsung Galaxy S21 Ultra and Samsung Galaxy S24+ use?
The Samsung Galaxy S21 Ultra is powered by the Exynos 2100, while the Samsung Galaxy S24+ uses the Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm).
Which is easier to carry and hold, the Samsung Galaxy S21 Ultra or Samsung Galaxy S24+?
The Samsung Galaxy S24+ is the more portable of the two: it's 32g lighter at 196 grams, it's also the more compact phone at 158.5 x 75.9 x 7.7 mm, and is slimmer at 7.7mm thick.
Which is more water resistant, the Samsung Galaxy S21 Ultra or Samsung Galaxy S24+?
The Samsung Galaxy S21 Ultra is rated IP68 - Dust and water resistant over 1.5 meter and 30 minutes, while the Samsung Galaxy S24+ is rated Not rated.
What operating system do the Samsung Galaxy S21 Ultra and Samsung Galaxy S24+ run?
The Samsung Galaxy S21 Ultra runs Android 11 and the Samsung Galaxy S24+ runs Android. This is one of the biggest factors when choosing between the two, as each ecosystem has its own apps, services and features.