Vivo Y91i vs Vivo Y91 vs Vivo Y81 vs Vivo Y71 comparison
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| key specs |
| Display | 6.22-inch | 6.22-inch | 6.22-inch | 6.00-inch |
| Processor | MediaTek Helio P22 | MediaTek Helio P22 | MediaTek Helio P22 | Qualcomm Snapdragon 425 |
| Front Camera | 5-megapixel | 8-megapixel | 5-megapixel | 5-megapixel |
| Rear Camera | 13-megapixel | 13-megapixel + 2-megapixel | 13-megapixel | 13-megapixel |
| RAM | 2GB | 2GB | 3GB | 3GB |
| Storage | 16GB | 32MB | 32GB | 16GB |
| Battery Capacity | 4030mAh | 4030mAh | 3260mAh | 3360mAh |
| OS | Android 8.1 | Android 8.1 | Android 8.1 | Android 8.1 Oreo |
| Resolution | 720x1520 pixels | 720x1520 pixels | 720x1520 pixels | 720x1440 pixels |
| general |
| Brand | Vivo | Vivo | Vivo | Vivo |
| Model | Y91i | Y91 | Y81 | Y71 |
| Release date | March 1, 2019 | January 1, 2019 | June 1, 2018 | April 1, 2018 |
| Launched in India | Yes | Yes | Yes | Yes |
| Form factor | Touchscreen | Touchscreen | Touchscreen | Touchscreen |
| Dimensions (mm) | 155.11 x 75.09 x 8.28 | 155.11 x 75.09 x 8.28 | 155.06 x 75.00 x 7.77 | 155.90 x 75.70 x 7.80 |
| Weight (g) | 163.50 | 163.50 | 146.50 | 150.00 |
| Battery capacity (mAh) | 4030 | 4030 | 3260 | 3360 |
| Colours | Fusion Black, Ocean Blue | Starry Black, Ocean Blue | Black | Black, Gold |
| Body type | - | - | Plastic | - |
| display |
| Screen size (inches) | 6.22 | 6.22 | 6.22 | 6.00 |
| Touchscreen | Yes | Yes | Yes | Yes |
| Resolution | 720x1520 pixels | 720x1520 pixels | 720x1520 pixels | 720x1440 pixels |
| Aspect ratio | 19:9 | - | 19:9 | 18:9 |
| Pixels per inch (PPI) | - | - | 270 | - |
| hardware |
| Processor | octa-core | octa-core | 2GHz octa-core | 1.4GHz quad-core |
| Processor make | MediaTek Helio P22 (MT6762) | MediaTek Helio P22 (MT6762R) | MediaTek Helio P22 (MT6762) | Qualcomm Snapdragon 425 |
| RAM | 2GB | 2GB | 3GB | 3GB |
| Internal storage | 16GB | 32MB | 32GB | 16GB |
| Expandable storage | Yes | Yes | Yes | - |
| Expandable storage type | microSD | microSD | microSD | - |
| Expandable storage up to (GB) | - | 256 | 256 | - |
| Dedicated microSD slot | - | Yes | - | - |
| camera |
| Rear camera | 13-megapixel (f/2.2) | 13-megapixel (f/f/2.2) + 2-megapixel (f/f/2.4) | 13-megapixel (f/2.2) | 13-megapixel |
| Rear autofocus | Yes | - | Phase detection autofocus | - |
| Rear flash | Yes | LED | LED | - |
| Front camera | 5-megapixel (f/1.8) | 8-megapixel (f/f/1.8) | 5-megapixel (f/2.2) | 5-megapixel |
| Front flash | - | No | - | - |
| software |
| Operating system | Android 8.1 | Android 8.1 | Android 8.1 | Android 8.1 Oreo |
| Skin | Funtouch OS 4.5 | Funtouch OS 4.5 | FunTouch OS 4.0 | FunTouch OS |
| connectivity |
| Wi-Fi | Yes | Yes | Yes | Yes |
| GPS | Yes | - | Yes | Yes |
| Bluetooth | Yes, v 5.00 | Yes, v 5.00 | Yes, v 5.00 | Yes, v 4.20 |
| USB OTG | Yes | - | - | - |
| Micro-USB | Yes | Yes | Yes | Yes |
| Headphones | 3.5mm | 3.5mm | 3.5mm | 3.5mm |
| FM | Yes | - | - | Yes |
| Number of SIMs | 2 | 2 | 2 | 2 |
| NFC | - | No | - | - |
| Active 4G on both SIM cards | - | Yes | - | - |
| Wi-Fi standards supported | - | - | 802.11 b/g/n | 802.11 b/g/n |
| Wi-Fi Direct | - | - | Yes | Yes |
| sim 1 |
| SIM Type | Nano-SIM | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes | Yes |
| sim 2 |
| SIM Type | Nano-SIM | Nano-SIM | Nano-SIM | Nano-SIM |
| GSM/CDMA | GSM | GSM | GSM | GSM |
| 3G | Yes | Yes | Yes | Yes |
| 4G/ LTE | Yes | Yes | Yes | Yes |
| sensors |
| Face unlock | Yes | Yes | - | - |
| Fingerprint sensor | No | Yes | - | - |
| Compass/ Magnetometer | Yes | Yes | Yes | Yes |
| Proximity sensor | Yes | Yes | Yes | Yes |
| Accelerometer | Yes | Yes | Yes | Yes |
| Ambient light sensor | Yes | Yes | - | Yes |
| Gyroscope | Yes | Yes | - | Yes |