Samsung Galaxy S21 Plus vs Samsung Galaxy S24
Our Verdict: The Galaxy S21 Plus and the Galaxy S24 are three years apart, which is enough for a real difference. The S21+ 5G has the better camera on paper, 64MP versus 50MP, and there's more battery in the S21+ 5G, 4800mAh to 4000mAh, which usually means longer between charges. The S21+ 5G has the bigger screen at 6.7" against 6.2", while the S24 has the sharper one at 416 PPI, and the S24 is the lighter phone at 167g against 202g. The S24 is the better phone; upgrade from the S21+ 5G if you want the newer hardware, or hold on if yours still does the job.
Buying outright, the S21+ 5G starts at £175 SIM-free.
10 reviews 4.2
10 reviews
Prices updated 28 July 2026
Samsung Galaxy S21 Plus
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Samsung Galaxy S24
|
|
|---|---|---|
| Expert Rating | 4.0 10 reviews |
4.2 10 reviews |
| Screen | 6.7" | 6.2" |
| Display | Dynamic AMOLED 2X | Dynamic LTPO AMOLED 2X |
| Resolution | 1080 x 2400 | 1080 x 2340 |
| Pixels Per Inch | 393 | 416 |
| Rear Camera | 64 Megapixels | 50 Megapixels |
| Front Camera | 10 Megapixels | 12 Megapixels |
| Chipset | Exynos 2100 | Qualcomm SM8650-AB Snapdragon 8 Gen 3 (4 nm) |
| Battery | 4,800 mAh | 4,000 mAh |
| Storage | 128GB, 256GB | 128GB, 256GB |
| OS | Android 11 | Android 14 |
| 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/6e |
| Bluetooth | 5.0, A2DP, LE | 5.3, A2DP, LE |
| Dimensions | 161.4 x 75.6 x 7.8 mm | 147.0 x 70.6 x 7.6 mm |
| Weight | 202 grams | 167 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 | - |
£20.00/mo
£49.00 upfront |
| SIM-free | £174.99 | £279.00 |
| Prices updated 28 July 2026 | ||
| Deals | Deals | |
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Frequently Asked Questions
Which has the better screen, the Samsung Galaxy S21 Plus or Samsung Galaxy S24?
The Samsung Galaxy S21 Plus has the bigger screen at 6.7" compared to the Samsung Galaxy S24's 6.2", the Samsung Galaxy S24 has the sharper display at 416 pixels per inch versus 393, and the Samsung Galaxy S21 Plus uses a Dynamic AMOLED 2X panel while the Samsung Galaxy S24 has a Dynamic LTPO AMOLED 2X.
Which has the better camera, the Samsung Galaxy S21 Plus or Samsung Galaxy S24?
The Samsung Galaxy S21 Plus features a 64 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 Plus or Samsung Galaxy S24?
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 S24?
The Samsung Galaxy S21 Plus is available in 128GB, 256GB, while the Samsung Galaxy S24 comes in 128GB, 256GB.
What processors do the Samsung Galaxy S21 Plus and Samsung Galaxy S24 use?
The Samsung Galaxy S21 Plus 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 Plus or Samsung Galaxy S24?
The Samsung Galaxy S24 is the more portable of the two: it's 35g lighter at 167 grams, it's also the more compact phone at 147.0 x 70.6 x 7.6 mm.
Which is more water resistant, the Samsung Galaxy S21 Plus or Samsung Galaxy S24?
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 S24 run?
The Samsung Galaxy S21 Plus runs Android 11 and the Samsung Galaxy S24 runs Android 14. This is one of the biggest factors when choosing between the two, as each ecosystem has its own apps, services and features.