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key specs | ||||
Display | 6.41-inch | 5.50-inch | ||
Processor | Qualcomm Snapdragon 660 | Apple A9 | ||
Front Camera | 24.8-megapixel | 5-megapixel | ||
Rear Camera | 12-megapixel + 5-megapixel | 12-megapixel | ||
RAM | 6GB | 2GB | ||
Storage | 128GB | 16GB | ||
Battery Capacity | 3400mAh | 2750mAh | ||
OS | Android 8.1 Oreo | iOS 9 | ||
Resolution | 1080x2340 pixels | 1080x1920 pixels | ||
general | ||||
Brand | Vivo | Apple | ||
Model | X21s | iPhone 6s Plus | ||
Release date | November 1, 2018 | September 1, 2015 | ||
Form factor | Touchscreen | Touchscreen | ||
Dimensions (mm) | 157.91 x 75.08 x 7.90 | 158.20 x 77.90 x 7.30 | ||
Weight (g) | 156.00 | 192.00 | ||
Battery capacity (mAh) | 3400 | 2750 | ||
Colours | Starry Night Black | Silver, Gold, Space Gray, Rose Gold | ||
Removable battery | - | No | ||
display | ||||
Screen size (inches) | 6.41 | 5.50 | ||
Touchscreen | Yes | Yes | ||
Resolution | 1080x2340 pixels | 1080x1920 pixels | ||
Aspect ratio | 19.5:9 | - | ||
Pixels per inch (PPI) | - | 401 | ||
hardware | ||||
Processor | octa-core | one-core | ||
Processor make | Qualcomm Snapdragon 660 | Apple A9 | ||
RAM | 6GB | 2GB | ||
Internal storage | 128GB | 16GB | ||
Expandable storage | Yes | No | ||
Expandable storage type | microSD | - | ||
Expandable storage up to (GB) | 256 | - | ||
camera | ||||
Rear camera | 12-megapixel + 5-megapixel | 12-megapixel | ||
Rear autofocus | Yes | - | ||
Front camera | 24.8-megapixel | 5-megapixel | ||
Rear flash | - | Yes | ||
software | ||||
Operating system | Android 8.1 Oreo | iOS 9 | ||
connectivity | ||||
Wi-Fi | Yes | Yes | ||
GPS | Yes | Yes | ||
Bluetooth | Yes | Yes, v 4.20 | ||
Micro-USB | Yes | - | ||
Headphones | 3.5mm | 3.5mm | ||
Number of SIMs | 2 | 1 | ||
Wi-Fi standards supported | - | 802.11 a/b/g/n/ac | ||
NFC | - | Yes | ||
Infrared | - | No | ||
USB OTG | - | No | ||
FM | - | No | ||
Wi-Fi Direct | - | No | ||
Mobile High-Definition Link (MHL) | - | No | ||
sim 1 | ||||
GSM/CDMA | GSM | GSM | ||
3G | Yes | Yes | ||
4G/ LTE | Yes | Yes | ||
SIM Type | - | Nano-SIM | ||
sim 2 | ||||
GSM/CDMA | GSM | - | ||
3G | Yes | - | ||
4G/ LTE | Yes | - | ||
sensors | ||||
Face unlock | Yes | - | ||
Fingerprint sensor | Yes | - | ||
Compass/ Magnetometer | Yes | Yes | ||
Proximity sensor | Yes | Yes | ||
Accelerometer | Yes | Yes | ||
Ambient light sensor | Yes | Yes | ||
Gyroscope | Yes | Yes | ||
Barometer | - | Yes | ||
Temperature sensor | - | No | ||
ratings | ||||
Overall NDTV Rating | - | Read Review | ||
Design Rating | - | |||
Display Rating | - | |||
Software Rating | - | |||
Performance Rating | - | |||
Battery Life Rating | - | |||
Camera Rating | - | |||
Value for Money Rating | - |