Samsung Galaxy A51 vs Xiaomi 15 Ultra
20Performance79.1
30.8Display69.1
34.7Camera73.2
29.4Battery79
33.3Features78.7
3 spec wins — Samsung Galaxy A5116 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 28.3, pulling ahead mainly in performance (+59) and battery (+50). Samsung Galaxy A51 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Samsung Galaxy A51
- 24% lower weight: 172 g vs 226 g
- 16% lower thickness: 7.9 mm vs 9.4 mm
- Has 3.5mm jack — the other doesn't
- Lower launch price: $399 vs $1,499
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 20
- Stronger display score: 69 vs 31
- Stronger camera score: 73 vs 35
- Stronger battery score: 79 vs 29
- Stronger features score: 79 vs 33
Display
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| Screen size | 6.5 ″ | 6.73 ″+4% |
| Panel type | Super AMOLED | LTPO AMOLED |
| Resolution | 2400x1080 | 1440x3200 |
| Pixel density | 405 ppi | 522 ppi+29% |
| Refresh rate | 60 Hz | 120 Hz+100% |
| Peak brightness | — | 3,200 nits |
| Screen-to-body | — | 90 % |
Performance
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | Samsung Exynos 9611 | Snapdragon 8 Elite |
| AnTuTu 10 | 215,000Top 98% | 2,650,000+1133%Top 4% |
| Geekbench 6 (single) | 350Top 99% | 3,050+771%Top 7% |
| Geekbench 6 (multi) | 1,250Top 100% | 9,600+668%Top 5% |
| RAM (max) | 6 GB | 16 GB+167% |
| Storage options | 64GB / 128GB | 256/512GB/1TB |
| Storage type | UFS 2.0 | UFS 4.1 |
Camera
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 48 MP | 50 MP+4% |
| Main aperture | f/2.0 | f/1.63 |
| Ultra-wide | 12 MP | 50 MP+317% |
| Telephoto | — | 200 MP |
| Optical zoom | — | 4.3 x |
| Max video | 4K@30fps | 8K@30fps |
| Front camera | 32 MP | 32 MP |
| OIS | No | Yes |
Battery
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 4,000 mAh | 5,410 mAh+35% |
| Wired charging | 15 W | 90 W+500% |
| Wireless charging | — | 80 W |
| Active use endurance | — | 12 h |
Design
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 172 g+24% | 226 g |
| Thickness | 7.9 mm+16% | 9.4 mm |
| IP rating | — | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 7 |
| Bluetooth | 5.0 | 6.0 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 10 (One UI 2) | Android 15 (HyperOS 2) |
| OS update pledge | 3 years | 4 years+33% |
Audio
| Spec | Samsung Galaxy A51 | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | Yes | No |
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