Vivo Y31 5G vs Vivo Z3x comparison
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| key specs |
| Display | 6.68-inch | 6.26-inch |
| Processor | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 660 |
| Front Camera | 8-megapixel | 16-megapixel |
| Rear Camera | 50-megapixel + 0.08-megapixel | 13-megapixel + 2-megapixel |
| RAM | 4GB, 6GB | 4GB |
| Storage | 128GB | 64GB |
| Battery Capacity | 6,500mAh | 3260mAh |
| OS | Android 15 | Android 9 Pie |
| Resolution | 1,608x720 pixels | 1080x2280 pixels |
| general |
| Brand | Vivo | Vivo |
| Model | Y31 5G | Z3x |
| Release date | September 15, 2025 | April 1, 2019 |
| Launched in India | Yes | No |
| Form factor | Touchscreen | Touchscreen |
| Body type | Plastic | - |
| Dimensions (mm) | 166.14 x 77.01 x 8.39 | 154.81 x 75.03 x 7.89 |
| Weight (g) | 209.00 | 150.00 |
| IP rating | IP68 | - |
| Battery capacity (mAh) | 6,500 | 3260 |
| Removable battery | No | - |
| Fast charging | 44W Flash Charge | - |
| Wireless charging | No | - |
| Colours | Rose Red and Diamond Green | Aurora, Hyun Red, Enamel Black |
| display |
| Refresh Rate | 120 Hz | - |
| Screen size (inches) | 6.68 | 6.26 |
| Touchscreen | Yes | Yes |
| Resolution | 1,608x720 pixels | 1080x2280 pixels |
| Pixels per inch (PPI) | 264 | - |
| Aspect ratio | - | 19:9 |
| hardware |
| Processor | 2.2GHz MHz octa-core | octa-core |
| Processor make | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 660 |
| RAM | 4GB, 6GB | 4GB |
| Internal storage | 128GB | 64GB |
| Expandable storage | Yes | Yes |
| Expandable storage type | microSD | microSD |
| Expandable storage up to (GB) | 2TB | 256 |
| camera |
| Rear camera | 50-megapixel (f/f/1.8) + 0.08-megapixel (f/f/3.0) | 13-megapixel (f/2.2) + 2-megapixel (f/2.4) |
| No. of Rear Cameras | 2 | - |
| Rear flash | Yes | Yes |
| Front camera | 8-megapixel (f/f/2.0) | 16-megapixel (f/2.0) |
| No. of Front Cameras | 1 | - |
| Pop-Up Camera | No | - |
| Rear autofocus | - | Yes |
| software |
| Operating system | Android 15 | Android 9 Pie |
| Skin | Funtouch OS 15 | Funtouch OS 9 |
| connectivity |
| Wi-Fi | Yes | Yes |
| GPS | Yes | Yes |
| Bluetooth | Yes, v 4.20 | Yes |
| NFC | No | - |
| USB Type-C | Yes | - |
| Number of SIMs | 2 | 2 |
| USB OTG | - | Yes |
| Micro-USB | - | Yes |
| Headphones | - | 3.5mm |
| 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 | - |
| Proximity sensor | Yes | Yes |
| Accelerometer | Yes | Yes |
| Ambient light sensor | Yes | Yes |
| Gyroscope | No | - |
| Barometer | No | - |
| Temperature sensor | No | - |
| Face unlock | - | Yes |