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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 | 6.00-inch | 6.43-inch | |
Processor | Qualcomm Snapdragon 660 | MediaTek Helio P25 | Qualcomm Snapdragon 660 | |
Front Camera | 12-megapixel | 20-megapixel | 12-megapixel | |
Rear Camera | 12-megapixel + 5-megapixel | 13-megapixel | 12-megapixel | |
RAM | 6GB | 4GB | 4GB | |
Storage | 128GB | 64GB | 128GB | |
Battery Capacity | 3200mAh | 4010mAh | 3905mAh | |
OS | Android 8.1 | Android 7.0 | Android 7.1 | |
Resolution | 1080x2280 pixels | 720x1440 pixels | 1080x2160 pixels | |
general | ||||
Brand | Vivo | Blu | Vivo | |
Model | X21 | Vivo X | X20 Plus UD | |
Release date | March 1, 2018 | February 1, 2018 | January 1, 2018 | |
Launched in India | Yes | - | - | |
Form factor | Touchscreen | Touchscreen | Touchscreen | |
Dimensions (mm) | 154.50 x 74.80 x 7.40 | 160.00 x 76.80 x 8.20 | 165.20 x 80.09 x 7.35 | |
Weight (g) | 156.20 | 188.00 | 181.50 | |
Battery capacity (mAh) | 3200 | 4010 | 3905 | |
Removable battery | No | No | No | |
Fast charging | Proprietary | - | - | |
Colours | Black, Gold | - | Black | |
display | ||||
Screen size (inches) | 6.28 | 6.00 | 6.43 | |
Touchscreen | Yes | Yes | Yes | |
Resolution | 1080x2280 pixels | 720x1440 pixels | 1080x2160 pixels | |
Aspect ratio | 19:9 | - | - | |
Pixels per inch (PPI) | - | 268 | - | |
hardware | ||||
Processor | 2.2GHz octa-core | 2.6GHz octa-core | 1.8GHz octa-core | |
Processor make | Qualcomm Snapdragon 660 | MediaTek Helio P25 (MT6757CD) | Qualcomm Snapdragon 660 | |
RAM | 6GB | 4GB | 4GB | |
Internal storage | 128GB | 64GB | 128GB | |
Expandable storage | Yes | Yes | Yes | |
Expandable storage type | microSD | microSD | microSD | |
Expandable storage up to (GB) | 256 | 128 | 256 | |
camera | ||||
Rear camera | 12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4) | 13-megapixel | 12-megapixel | |
Rear autofocus | Phase detection autofocus | - | - | |
Rear flash | LED | LED | Yes | |
Front camera | 12-megapixel (f/2.0) | 20-megapixel | 12-megapixel | |
Front flash | - | LED | - | |
software | ||||
Operating system | Android 8.1 | Android 7.0 | Android 7.1 | |
Skin | FunTouch 4.0 | - | FunTouch OS | |
connectivity | ||||
Wi-Fi | Yes | Yes | Yes | |
Wi-Fi standards supported | 802.11 a/b/g/n/ac | 802.11 a/b/g/n | - | |
GPS | Yes | Yes | Yes | |
Bluetooth | Yes, v 5.00 | Yes, v 4.00 | Yes, v 5.00 | |
NFC | No | 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 | 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 |