Samsung Galaxy A15 vs Samsung Galaxy S25 Ultra
If you'd rather pay up front, the A15 is the cheaper buy at £105 SIM-free.
Prices updated 27 July 2026
Samsung Galaxy A15
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Samsung Galaxy S25 Ultra
|
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|---|---|---|
| Screen | 6.5" | 6.8" |
| Display | Super AMOLED | Dynamic LTPO AMOLED 2X |
| Resolution | 1080 x 2340 | 1440 x 3120 |
| Pixels Per Inch | 396 | 505 |
| Rear Camera | 50 Megapixels | 200 Megapixels |
| Front Camera | 13 Megapixels | 12 Megapixels |
| Chipset | MediaTek Helio G99 | Qualcomm SM8750-AB Snapdragon 8 Elite (3 nm) |
| Battery | 5,000 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 4G | Up to 5G |
| Wi-Fi | 802.11 a/b/g/n/ac | 802.11 a/b/g/n/ac/6e/7 |
| Bluetooth | 5.3 with A2DP, LE | 5.3, A2DP, LE |
| Dimensions | 160.1 x 76.8 x 8.4 mm | 162.8 x 77.6 x 8.2 mm |
| Weight | 200 grams | 219 grams |
| Water Resistance | Not rated | IP68 - Dust and water resistant over 1.5 meter and 30 minutes |
| Contracts | - |
£33.79/mo
£29.00 upfront |
| SIM-free | £104.99 | £569.99 |
| Prices updated 27 July 2026 | ||
| Deals | Deals | |
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Frequently Asked Questions
Which has the better screen, the Samsung Galaxy A15 or Samsung Galaxy S25 Ultra?
The Samsung Galaxy S25 Ultra has the bigger screen at 6.8" compared to the Samsung Galaxy A15's 6.5", the Samsung Galaxy S25 Ultra has the sharper display at 505 pixels per inch versus 396, and the Samsung Galaxy A15 uses a Super AMOLED panel while the Samsung Galaxy S25 Ultra has a Dynamic LTPO AMOLED 2X.
Which has the better camera, the Samsung Galaxy A15 or Samsung Galaxy S25 Ultra?
The Samsung Galaxy A15 features a 50 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 A15 or Samsung Galaxy S25 Ultra?
The Samsung Galaxy A15 is cheaper SIM-free, starting from £104.99.
What storage options are available for the Samsung Galaxy A15 and Samsung Galaxy S25 Ultra?
The Samsung Galaxy A15 is available in 128GB, while the Samsung Galaxy S25 Ultra comes in 256GB, 512GB, 1TB.
What processors do the Samsung Galaxy A15 and Samsung Galaxy S25 Ultra use?
The Samsung Galaxy A15 is powered by the MediaTek Helio G99, 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 A15 or Samsung Galaxy S25 Ultra?
The Samsung Galaxy A15 is the more portable of the two: it's 19g lighter at 200 grams, it's also the more compact phone at 160.1 x 76.8 x 8.4 mm.
Which is more water resistant, the Samsung Galaxy A15 or Samsung Galaxy S25 Ultra?
The Samsung Galaxy A15 is rated Not rated, while the Samsung Galaxy S25 Ultra is rated IP68 - Dust and water resistant over 1.5 meter and 30 minutes.
What operating system do the Samsung Galaxy A15 and Samsung Galaxy S25 Ultra run?
The Samsung Galaxy A15 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.