Redmi 15 vs vivo X100 Ultra
21.8Performance64.4
50.5Display67.6
29Camera75.8
66.7Battery75.5
28Features86.7
5 spec wins — Redmi 158 spec wins — vivo X100 Ultra
InnoReviews verdict
vivo X100 Ultra wins this phone face-off, 71.8 to 38.6, pulling ahead mainly in features (+59) and camera (+47). Redmi 15 still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Redmi 15
- 27% higher capacity: 7,000 mAh vs 5,500 mAh
- 20% higher Refresh rate: 144 Hz vs 120 Hz
Reasons to pick the vivo X100 Ultra
- Stronger performance score: 64 vs 22
- Stronger display score: 68 vs 51
- Stronger camera score: 76 vs 29
- Stronger battery score: 76 vs 67
- Stronger features score: 87 vs 28
Display
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| Screen size | 6.9 ″+2% | 6.78 ″ |
| Panel type | IPS LCD | LTPO AMOLED |
| Resolution | 1080x2340 | 1440x3200 |
| Pixel density | 374 ppi | 517 ppi+38% |
| Refresh rate | 144 Hz+20% | 120 Hz |
| Peak brightness | 850 nits | 3,000 nits+253% |
| Screen-to-body | — | 89.8 % |
Performance
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| Chipset | Snapdragon 685 | Qualcomm Snapdragon 8 Gen 3 |
| Geekbench 6 (single) | 474Bottom 9% | — |
| Geekbench 6 (multi) | 1,620Bottom 10% | — |
| Wild Life Extreme stability | 99 %Top 39% | — |
| RAM (max) | 8 GB | 16 GB+100% |
| Storage options | 128/256GB | 256/512GB/1TB |
| Storage type | UFS 2.2 | UFS 4.0 |
Camera
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.8 | f/1.75 |
| Ultra-wide | — | 50 MP |
| Telephoto | — | 200 MP |
| Optical zoom | — | 3.7 x |
| Max video | 1080p@30fps | 8K@30fps |
| Front camera | 8 MP | 50 MP+525% |
| OIS | No | Yes |
Battery
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| Capacity | 7,000 mAh+27% | 5,500 mAh |
| Wired charging | 33 W | 80 W+142% |
| Wireless charging | — | 30 W |
| Active use endurance | — | 12.9 h |
Design
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| Weight | 214 g+7% | 229 g |
| Thickness | 8.4 mm+9% | 9.2 mm |
| IP rating | IP64 | IP68/IP69 |
| Frame material | Plastic | Aluminum |
Connectivity
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| 5G | No | Yes |
| Wi-Fi | Wi-Fi 5 | Wi-Fi 7 |
| Bluetooth | 5.0 | 5.4 |
| NFC | Yes | Yes |
| USB | USB-C 2.0 | USB-C 3.2 |
| eSIM | No | No |
Software
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| OS at launch | Android 15 (HyperOS 2) | Android 14 (OriginOS 4) |
| OS update pledge | 2 years | — |
Audio
| Spec | Redmi 15 | vivo X100 Ultra |
|---|---|---|
| Stereo speakers | No | Yes |
| 3.5mm jack | No | No |