Samsung Galaxy S21 Ultra vs Xiaomi 12
37.2Performance43.2
56.3Display47.7
72Camera47
46.4Battery62.5
78.7Features65.3
9 spec wins — Samsung Galaxy S21 Ultra8 spec wins — Xiaomi 12
InnoReviews verdict
Samsung Galaxy S21 Ultra wins this phone face-off, 53.9 to 50.9, pulling ahead mainly in camera (+25) and features (+13). Xiaomi 12 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
- Stronger display score: 56 vs 48
- Stronger camera score: 72 vs 47
- Stronger features score: 79 vs 65
- 116% higher Main camera: 108 MP vs 50 MP
- 50% higher RAM (max): 12 GB vs 8 GB
Reasons to pick the Xiaomi 12
- Stronger performance score: 43 vs 37
- Stronger battery score: 63 vs 46
- 233% higher Wireless charging: 50 W vs 15 W
- 168% higher Wired charging: 67 W vs 25 W
- 47% higher AnTuTu 10: 1,150,000 vs 783,817
- Lower launch price: $749 vs $1,199
Display
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| Screen size | 6.8 ″+8% | 6.28 ″ |
| Panel type | LTPO AMOLED | AMOLED |
| Resolution | 3200x1440 | 2400x1080 |
| Pixel density | 515 ppi+23% | 419 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 1,500 nits+36% | 1,100 nits |
| AnTuTu 10 (CPU) | 263,424Top 88% | — |
| AnTuTu 10 (GPU) | 126,989Top 82% | — |
| AnTuTu 10 (Memory) | 165,563Top 72% | — |
| AnTuTu 10 (UX) | 227,841Top 82% | — |
Performance
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| Chipset | Samsung Exynos 2100 | Snapdragon 8 Gen 1 |
| AnTuTu 10 | 783,817Top 65% | 1,150,000+47%Top 37% |
| Geekbench 6 (single) | 1,430Top 52% | 1,720+20%Top 43% |
| Geekbench 6 (multi) | 3,550Top 56% | 4,300+21%Top 45% |
| RAM (max) | 12 GB+50% | 8 GB |
| Storage options | 128GB / 256GB / 512GB | 128GB / 256GB |
| Storage type | UFS 3.1 | UFS 3.1 |
Camera
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| Main camera | 108 MP+116% | 50 MP |
| Main aperture | f/1.8 | f/1.9 |
| Ultra-wide | 12 MP | 13 MP+8% |
| Telephoto | 10 MP | — |
| Optical zoom | 10 x | — |
| Max video | 8K@24fps | 8K@24fps |
| Front camera | 40 MP+25% | 32 MP |
| OIS | Yes | Yes |
Battery
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| Capacity | 5,000 mAh+11% | 4,500 mAh |
| Wired charging | 25 W | 67 W+168% |
| Wireless charging | 15 W | 50 W+233% |
Design
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| Weight | 228 g | 180 g+21% |
| Thickness | 8.9 mm | 8.2 mm+8% |
| IP rating | IP68 | — |
| Frame material | Aluminum | Aluminum |
Connectivity
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 6E | Wi-Fi 6 |
| Bluetooth | 5.2 | 5.2 |
| NFC | Yes | Yes |
| USB | USB-C 3.2 | USB-C 2.0 |
| eSIM | Yes | No |
Software
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| OS at launch | Android 11 (One UI 3.1) | Android 12 (MIUI 13) |
| OS update pledge | 4 years+33% | 3 years |
Audio
| Spec | Samsung Galaxy S21 Ultra | Xiaomi 12 |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |