vivo X100 Ultra vs vivo Y31 5G
64.4Performance20
67.6Display39.6
75.8Camera29
75.5Battery66.2
86.7Features73.3
8 spec wins — vivo X100 Ultra3 spec wins — vivo Y31 5G
InnoReviews verdict
vivo X100 Ultra wins this phone face-off, 71.8 to 40.3, pulling ahead mainly in camera (+47) and performance (+44). vivo Y31 5G still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the vivo X100 Ultra
- Stronger performance score: 64 vs 20
- Stronger display score: 68 vs 40
- Stronger camera score: 76 vs 29
- Stronger battery score: 76 vs 66
- Stronger features score: 87 vs 73
Reasons to pick the vivo Y31 5G
- 18% higher capacity: 6,500 mAh vs 5,500 mAh
Display
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| Screen size | 6.78 ″+1% | 6.68 ″ |
| Panel type | LTPO AMOLED | IPS LCD |
| Resolution | 1440x3200 | 720x1608 |
| Pixel density | 517 ppi+96% | 264 ppi |
| Refresh rate | 120 Hz | 120 Hz |
| Peak brightness | 3,000 nits+200% | 1,000 nits |
| Screen-to-body | 89.8 % | — |
Performance
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| Chipset | Qualcomm Snapdragon 8 Gen 3 | Qualcomm Snapdragon 4 Gen 2 |
| RAM (max) | 16 GB+167% | 6 GB |
| Storage options | 256/512GB/1TB | 128GB |
| Storage type | UFS 4.0 | eMMC 5.1 |
Camera
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| Main camera | 50 MP | 50 MP |
| Main aperture | f/1.75 | f/1.8 |
| Ultra-wide | 50 MP | — |
| Telephoto | 200 MP | — |
| Optical zoom | 3.7 x | — |
| Max video | 8K@30fps | 1080p@30fps |
| Front camera | 50 MP+525% | 8 MP |
| OIS | Yes | No |
Battery
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| Capacity | 5,500 mAh | 6,500 mAh+18% |
| Wired charging | 80 W+82% | 44 W |
| Wireless charging | 30 W | — |
| Active use endurance | 12.9 h | — |
Design
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| Weight | 229 g | 209 g+9% |
| Thickness | 9.2 mm | 8.4 mm+9% |
| IP rating | IP68/IP69 | IP68/IP69 |
| Frame material | Aluminum | — |
Connectivity
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| 5G | Yes | Yes |
| Wi-Fi | Wi-Fi 7 | Wi-Fi 5 |
| Bluetooth | 5.4 | 4.2 |
| NFC | Yes | No |
| USB | USB-C 3.2 | USB-C 2.0 |
| eSIM | No | No |
Software
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| OS at launch | Android 14 (OriginOS 4) | Android 15 (Funtouch OS 15) |
Audio
| Spec | vivo X100 Ultra | vivo Y31 5G |
|---|---|---|
| Stereo speakers | Yes | Yes |
| 3.5mm jack | No | No |