Vivo S2 vs Xiaomi 15 Ultra
28.9Performance79.1
65.5Display69.1
34.1Camera73.2
70.9Battery79
57.3Features78.7
5 spec wins — Vivo S28 spec wins — Xiaomi 15 Ultra
InnoReviews verdict
Xiaomi 15 Ultra wins this phone face-off, 75.9 to 48.5, pulling ahead mainly in performance (+50) and camera (+39). Vivo S2 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Vivo S2
- 30% higher capacity: 7,050 mAh vs 5,410 mAh
- 15% lower thickness: 8 mm vs 9.4 mm
- 13% lower weight: 197 g vs 226 g
Reasons to pick the Xiaomi 15 Ultra
- Stronger performance score: 79 vs 29
- Stronger display score: 69 vs 66
- Stronger camera score: 73 vs 34
- Stronger battery score: 79 vs 71
- Stronger features score: 79 vs 57
Display
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| Screen size | 6.83 ″+1% | 6.73 ″ |
| Panel type | 3D Curved AMOLED | LTPO AMOLED |
| Resolution | 1260x2800 | 1440x3200 |
| Pixel density | 449 ppi | 522 ppi+16% |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,000 nits | 3,200 nits+7% |
| Screen-to-body | 91.4 %+2% | 90 % |
Performance
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| Chipset | MediaTek Dimensity 7360-Turbo | Snapdragon 8 Elite |
| AnTuTu | — | 2,650,000 |
| Geekbench 6 (single) | — | 3,050Top 12% |
| Geekbench 6 (multi) | — | 9,600Top 11% |
| RAM (max) | 8 GB | 16 GB+100% |
| Storage options | 128/256GB | 256/512GB/1TB |
| Storage type | UFS 3.1 | UFS 4.1 |
Camera
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.8 | f/1.63 |
| Ultra-wide | — | 50 MP |
| Telephoto | — | 200 MP |
| Optical zoom | — | 4.3 x |
| Max video | — | 8K@30fps |
| Front camera | 32 MP | 32 MP |
| OIS | No | Yes |
Battery
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| Capacity | 7,050 mAh+30% | 5,410 mAh |
| Wired charging | 44 W | 90 W+105% |
| Wireless charging | — | 80 W |
| Active use endurance | — | 12 h |
Design
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| Weight | 197 g+13% | 226 g |
| Thickness | 8 mm+15% | 9.4 mm |
| IP rating | IP68/IP69 | IP68 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 7 |
| Bluetooth | 5.4 | 6.0 |
| NFC | No | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | Yes |
Software
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| OS at launch | Android 16 (OriginOS 6) | Android 15 (HyperOS 2) |
| OS update pledge | 3 years | 4 years+33% |
Audio
| Spec | Vivo S2 | Xiaomi 15 Ultra |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |