Samsung Galaxy S20 5G vs Samsung Galaxy S25 Ultra
Our Verdict: The Galaxy S20 5G and the Galaxy S25 Ultra are five years apart, which is enough for a real difference. The S25 Ultra leads on camera hardware with a 200MP main sensor to the S20 5G's 64MP, and there's more battery in the S25 Ultra, 5000mAh to 4000mAh, which usually means longer between charges. The S25 Ultra has the bigger screen at 6.8" against 6.2", while the S20 5G has the sharper one at 566 PPI, and storage goes higher on the S25 Ultra, up to 1TB against 128GB. Coming from the S20 5G, the S25 Ultra is a genuine upgrade rather than a token one.
Buying outright, the S20 5G starts at £165 SIM-free.
12 reviews 4.4
12 reviews
Samsung Galaxy S20 5G
|
Samsung Galaxy S25 Ultra
|
|
|---|---|---|
| Expert Rating | 4.2 12 reviews |
4.4 12 reviews |
| Screen | 6.2" | 6.8" |
| Display | AMOLED | Dynamic LTPO AMOLED 2X |
| Resolution | 1440 x 3200 | 1440 x 3120 |
| Pixels Per Inch | 566 | 505 |
| Rear Camera | 64 Megapixels | 200 Megapixels |
| Front Camera | 10 Megapixels | 12 Megapixels |
| Chipset | Exynos 990 | Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) |
| Battery | 4,000 mAh | 5,000 mAh |
| Storage | 128GB | 256GB, 512GB, 1TB |
| OS | Android | Android 15 |
| SIM Type | Nano SIM | nano-SIM and e-SIM |
| Connectivity | Up to 5G | Up to 5G |
| Wi-Fi | 802.11 a/b/g/n/ac/ax | 802.11 a/b/g/n/ac/6e/7 |
| Bluetooth | 5.0 with A2DP, LE, apt-X | 5.3, A2DP, LE |
| Dimensions | 152 x 68 x 7.9 mm | 162.8 x 77.6 x 8.2 mm |
| Weight | 164 grams | 219 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 | - |
£33.79/mo
£29.00 upfront |
| SIM-free | £164.99 | £579.00 |
| Deals | Deals |
Cheapest Deals
Related Comparisons
Frequently Asked Questions
Which has the better screen, the Samsung Galaxy S20 5G or Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra has the bigger screen at 6.8" compared to the Samsung Galaxy S20 5G's 6.2", the Samsung Galaxy S20 5G has the sharper display at 566 pixels per inch versus 505, and the Samsung Galaxy S20 5G uses a AMOLED panel while the Samsung Galaxy S25 Ultra has a Dynamic LTPO AMOLED 2X.
Which has the better camera, the Samsung Galaxy S20 5G or Samsung Galaxy S25 Ultra?
The Samsung Galaxy S20 5G features a 64 Megapixels rear camera, while the Samsung Galaxy S25 Ultra has a 200 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 S20 5G or Samsung Galaxy S25 Ultra?
The Samsung Galaxy S20 5G is cheaper SIM-free, starting from £164.99.
What storage options are available for the Samsung Galaxy S20 5G and Samsung Galaxy S25 Ultra?
The Samsung Galaxy S20 5G is available in 128GB, while the Samsung Galaxy S25 Ultra comes in 256GB, 512GB, 1TB.
What processors do the Samsung Galaxy S20 5G and Samsung Galaxy S25 Ultra use?
The Samsung Galaxy S20 5G is powered by the Exynos 990, while the Samsung Galaxy S25 Ultra uses the Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm).
Which is easier to carry and hold, the Samsung Galaxy S20 5G or Samsung Galaxy S25 Ultra?
The Samsung Galaxy S20 5G is the more portable of the two: it's 55g lighter at 164 grams, it's also the more compact phone at 152 x 68 x 7.9 mm.
Which is more water resistant, the Samsung Galaxy S20 5G or Samsung Galaxy S25 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 S20 5G and Samsung Galaxy S25 Ultra run?
The Samsung Galaxy S20 5G runs Android and the Samsung Galaxy S25 Ultra runs Android 15. This is one of the biggest factors when choosing between the two, as each ecosystem has its own apps, services and features.