Vivo Y31 5G vs Vivo Y79 comparison
        
        
            
                
                    
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                    | key specs | 
| Display | 6.68-inch | 5.99-inch | 
| Processor | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 625 | 
| Front Camera | 8-megapixel | 24-megapixel | 
| Rear Camera | 50-megapixel + 0.08-megapixel | 16-megapixel | 
| RAM | 4GB, 6GB | 4GB | 
| Storage | 128GB | 64GB | 
| Battery Capacity | 6,500mAh | 3225mAh | 
| OS | Android 15 | Android 7.1 | 
| Resolution | 1,608x720 pixels | 720x1440 pixels | 
| general | 
| Brand | Vivo | Vivo | 
| Model | Y31 5G | Y79 | 
| Release date | September 15, 2025 | November 1, 2017 | 
| Launched in India | Yes | - | 
| Form factor | Touchscreen | Touchscreen | 
| Body type | Plastic | - | 
| Dimensions (mm) | 166.14 x 77.01 x 8.39 | 155.80 x 75.70 x 7.70 | 
| Weight (g) | 209.00 | 160.00 | 
| IP rating | IP68 | - | 
| Battery capacity (mAh) | 6,500 | 3225 | 
| Removable battery | No | No | 
| Fast charging | 44W Flash Charge | - | 
| Wireless charging | No | - | 
| Colours | Rose Red and Diamond Green | Champagne Gold, Matte Black, Rose Gold | 
| display | 
| Refresh Rate | 120 Hz | - | 
| Screen size (inches) | 6.68 | 5.99 | 
| Touchscreen | Yes | Yes | 
| Resolution | 1,608x720 pixels | 720x1440 pixels | 
| Pixels per inch (PPI) | 264 | - | 
| hardware | 
| Processor | 2.2GHz MHz octa-core | 2GHz octa-core | 
| Processor make | Qualcomm Snapdragon 4 Gen 2 | Qualcomm Snapdragon 625 | 
| 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) | 16-megapixel | 
| No. of Rear Cameras | 2 | - | 
| Rear flash | Yes | Dual LED | 
| Front camera | 8-megapixel (f/f/2.0) | 24-megapixel | 
| No. of Front Cameras | 1 | - | 
| Pop-Up Camera | No | - | 
| Front flash | - | Yes | 
| software | 
| Operating system | Android 15 | Android 7.1 | 
| Skin | Funtouch OS 15 | Funtouch OS 3.2 | 
| connectivity | 
| Wi-Fi | Yes | Yes | 
| GPS | Yes | Yes | 
| Bluetooth | Yes, v 4.20 | Yes, v 4.20 | 
| NFC | No | No | 
| USB Type-C | Yes | - | 
| Number of SIMs | 2 | 2 | 
| Wi-Fi standards supported | - | 802.11 b/g/n | 
| Infrared | - | No | 
| USB OTG | - | Yes | 
| Headphones | - | 3.5mm | 
| FM | - | Yes | 
| Wi-Fi Direct | - | No | 
| Mobile High-Definition Link (MHL) | - | No | 
| 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 | - | 
| Compass/ Magnetometer | Yes | No | 
| Proximity sensor | Yes | Yes | 
| Accelerometer | Yes | Yes | 
| Ambient light sensor | Yes | Yes | 
| Gyroscope | No | Yes | 
| Barometer | No | No | 
| Temperature sensor | No | No |