Vivo Y31 Pro 5G vs Vivo Y91 comparison
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| key specs |
| Display | 6.72-inch | 6.22-inch |
| Processor | MediaTek Dimensity 7300 | MediaTek Helio P22 |
| Front Camera | 8-megapixel | 8-megapixel |
| Rear Camera | 50-megapixel + 2-megapixel | 13-megapixel + 2-megapixel |
| RAM | 8GB | 2GB |
| Storage | 128GB, 256GB | 32MB |
| Battery Capacity | 6,500mAh | 4030mAh |
| OS | Android 15 | Android 8.1 |
| Resolution | 2,408x1,080 pixels | 720x1520 pixels |
| general |
| Brand | Vivo | Vivo |
| Model | Y31 Pro 5G | Y91 |
| Release date | September 15, 2025 | January 1, 2019 |
| Launched in India | Yes | Yes |
| Form factor | Touchscreen | Touchscreen |
| Body type | Plastic | - |
| Dimensions (mm) | 165.70 x 76.30 x 8.09 | 155.11 x 75.09 x 8.28 |
| Weight (g) | 204.00 | 163.50 |
| IP rating | IP64 | - |
| Battery capacity (mAh) | 6,500 | 4030 |
| Removable battery | No | - |
| Fast charging | 44W Flash Charge | - |
| Wireless charging | No | - |
| Colours | Mocha Brown and Dreamy White | Starry Black, Ocean Blue |
| display |
| Refresh Rate | 60 Hz | - |
| Screen size (inches) | 6.72 | 6.22 |
| Touchscreen | No | Yes |
| Resolution | 2,408x1,080 pixels | 720x1520 pixels |
| Pixels per inch (PPI) | 393 | - |
| hardware |
| Processor | 2.0GHz MHz octa-core | octa-core |
| Processor make | MediaTek Dimensity 7300 | MediaTek Helio P22 (MT6762R) |
| RAM | 8GB | 2GB |
| Internal storage | 128GB, 256GB | 32MB |
| Expandable storage | - | Yes |
| Expandable storage type | - | microSD |
| Expandable storage up to (GB) | - | 256 |
| Dedicated microSD slot | - | Yes |
| camera |
| Rear camera | 50-megapixel (f/f/1.8) + 2-megapixel (f/f/2.4) | 13-megapixel (f/f/2.2) + 2-megapixel (f/f/2.4) |
| No. of Rear Cameras | 2 | - |
| Rear flash | Yes | LED |
| Front camera | 8-megapixel (f/f/2.05) | 8-megapixel (f/f/1.8) |
| No. of Front Cameras | 1 | - |
| Front flash | - | No |
| software |
| Operating system | Android 15 | Android 8.1 |
| Skin | Funtouch OS 15 | Funtouch OS 4.5 |
| connectivity |
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes, v 5.40 | Yes, v 5.00 |
| NFC | No | No |
| Infrared | Yes | - |
| USB Type-C | Yes | - |
| Number of SIMs | 2 | 2 |
| Micro-USB | - | Yes |
| Headphones | - | 3.5mm |
| Active 4G on both SIM cards | - | Yes |
| sim 1 |
| SIM Type | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM |
| 4G/ LTE | Yes | Yes |
| 5G | Yes | - |
| 3G | - | Yes |
| sim 2 |
| SIM Type | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM |
| 4G/ LTE | Yes | Yes |
| 5G | Yes | - |
| 3G | - | Yes |
| sensors |
| Fingerprint sensor | Yes | Yes |
| Compass/ Magnetometer | Yes | Yes |
| Proximity sensor | Yes | Yes |
| Accelerometer | Yes | Yes |
| Ambient light sensor | Yes | Yes |
| Gyroscope | Yes | Yes |
| Barometer | No | - |
| Temperature sensor | No | - |
| Face unlock | - | Yes |