Samsung Galaxy S21 Ultra vs Xiaomi 15 Pro
37.2Performance64.4
56.3Display63.3
72Camera69.5
46.4Battery82
78.7Features86.7
5 spec wins — Samsung Galaxy S21 Ultra9 spec wins — Xiaomi 15 Pro
InnoReviews verdict
Xiaomi 15 Pro wins this phone face-off, 70.9 to 53.9, pulling ahead mainly in battery (+36) and performance (+27). Samsung Galaxy S21 Ultra 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 S21 Ultra
- 116% higher Main camera: 108 MP vs 50 MP
- 100% higher Optical zoom: 10 x vs 5 x
- 25% higher Front camera: 40 MP vs 32 MP
- Has eSIM — the other doesn't
Reasons to pick the Xiaomi 15 Pro
- Stronger performance score: 64 vs 37
- Stronger display score: 63 vs 56
- Stronger battery score: 82 vs 46
- Stronger features score: 87 vs 79
- 400% higher telephoto: 50 MP vs 10 MP
Display
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| Screen size | 6.8 ″+1% | 6.73 ″ |
| Panel type | LTPO AMOLED | LTPO AMOLED |
| Resolution | 3200x1440 | 1440x3200 |
| Pixel density | 515 ppi | — |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,500 nits | 3,200 nits+113% |
Performance
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| Chipset | Samsung Exynos 2100 | Snapdragon 8 Elite |
| AnTuTu | 783,817Bottom 22% | — |
| AnTuTu 11 (CPU) | 263,424Bottom 17% | — |
| AnTuTu 11 (GPU) | 126,989Bottom 33% | — |
| AnTuTu 11 (Memory) | 165,563Bottom 35% | — |
| AnTuTu 11 (UX) | 227,841Bottom 20% | — |
| Geekbench 6 (single) | 1,430Top 46% | — |
| Geekbench 6 (multi) | 3,550Bottom 50% | — |
| RAM (max) | 12 GB | 16 GB+33% |
| Storage options | 128GB / 256GB / 512GB | 256/512GB/1TB |
| Storage type | UFS 3.1 | UFS 4.0 |
Camera
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| Main camera | 108 MP+116% | 50 MP |
| Main aperture | f/1.8 | f/1.44 |
| Ultra-wide | 12 MP | 50 MP+317% |
| Telephoto | 10 MP | 50 MP+400% |
| Optical zoom | 10 x+100% | 5 x |
| Max video | 8K@24fps | 8K@30fps |
| Front camera | 40 MP+25% | 32 MP |
| OIS | Yes | Yes |
Battery
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| Capacity | 5,000 mAh | 6,100 mAh+22% |
| Wired charging | 25 W | 90 W+260% |
| Wireless charging | 15 W | 50 W+233% |
Design
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| Weight | 228 g | 213 g+7% |
| Thickness | 8.9 mm | 8.4 mm+6% |
| IP rating | IP68 | IP68 |
| Frame material | Aluminum | — |
Connectivity
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6E | Wi-Fi 7 |
| Bluetooth | 5.2 | 5.4 |
| NFC | Yes | Yes |
| USB | USB-C 3.2 | USB-C 3.2 Gen 2 |
| eSIM | Yes | No |
Software
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| OS at launch | Android 11 (One UI 3.1) | Android 15 (HyperOS 2) |
| OS update pledge | 4 years | — |
Audio
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 15 Pro |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |
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