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| ratings | ||||
| Overall NDTV Rating | Read Review | - | ||
| Design Rating | - | |||
| Display Rating | - | |||
| Software Rating | - | |||
| Performance Rating | - | |||
| Battery Life Rating | - | |||
| Camera Rating | - | |||
| Value for Money Rating | - | |||
| key specs | ||||
| Display | 6.28-inch | 6.43-inch | ||
| Processor | Qualcomm Snapdragon 660 | Qualcomm Snapdragon 660 | ||
| Front Camera | 12-megapixel | 12-megapixel | ||
| Rear Camera | 12-megapixel + 5-megapixel | 12-megapixel | ||
| RAM | 6GB | 4GB | ||
| Storage | 128GB | 128GB | ||
| Battery Capacity | 3200mAh | 3905mAh | ||
| OS | Android 8.1 | Android 7.1 | ||
| Resolution | 1080x2280 pixels | 1080x2160 pixels | ||
| general | ||||
| Brand | Vivo | Vivo | ||
| Model | X21 | X20 Plus UD | ||
| Release date | March 1, 2018 | January 1, 2018 | ||
| Launched in India | Yes | - | ||
| Form factor | Touchscreen | Touchscreen | ||
| Dimensions (mm) | 154.50 x 74.80 x 7.40 | 165.20 x 80.09 x 7.35 | ||
| Weight (g) | 156.20 | 181.50 | ||
| Battery capacity (mAh) | 3200 | 3905 | ||
| Removable battery | No | No | ||
| Fast charging | Proprietary | - | ||
| Colours | Black, Gold | Black | ||
| display | ||||
| Screen size (inches) | 6.28 | 6.43 | ||
| Touchscreen | Yes | Yes | ||
| Resolution | 1080x2280 pixels | 1080x2160 pixels | ||
| Aspect ratio | 19:9 | - | ||
| hardware | ||||
| Processor | 2.2GHz octa-core | 1.8GHz octa-core | ||
| Processor make | Qualcomm Snapdragon 660 | Qualcomm Snapdragon 660 | ||
| RAM | 6GB | 4GB | ||
| Internal storage | 128GB | 128GB | ||
| Expandable storage | Yes | Yes | ||
| Expandable storage type | microSD | microSD | ||
| Expandable storage up to (GB) | 256 | 256 | ||
| camera | ||||
| Rear camera | 12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4) | 12-megapixel | ||
| Rear autofocus | Phase detection autofocus | - | ||
| Rear flash | LED | Yes | ||
| Front camera | 12-megapixel (f/2.0) | 12-megapixel | ||
| software | ||||
| Operating system | Android 8.1 | Android 7.1 | ||
| Skin | FunTouch 4.0 | FunTouch OS | ||
| connectivity | ||||
| Wi-Fi | Yes | Yes | ||
| Wi-Fi standards supported | 802.11 a/b/g/n/ac | - | ||
| GPS | Yes | Yes | ||
| Bluetooth | Yes, v 5.00 | Yes, v 5.00 | ||
| NFC | No | No | ||
| Infrared | No | No | ||
| USB OTG | Yes | Yes | ||
| Micro-USB | Yes | - | ||
| Headphones | 3.5mm | 3.5mm | ||
| FM | No | No | ||
| Number of SIMs | 2 | 2 | ||
| Wi-Fi Direct | - | No | ||
| Mobile High-Definition Link (MHL) | - | No | ||
| sim 1 | ||||
| SIM Type | Nano-SIM | Nano-SIM | ||
| GSM/CDMA | GSM | GSM | ||
| 3G | Yes | Yes | ||
| 4G/ LTE | Yes | Yes | ||
| sim 2 | ||||
| SIM Type | Nano-SIM | Nano-SIM | ||
| GSM/CDMA | GSM | GSM | ||
| 3G | Yes | Yes | ||
| 4G/ LTE | Yes | Yes | ||
| sensors | ||||
| Fingerprint sensor | 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 | ||