Vivo X21 UD vs Oppo F7 vs Oppo R15 Dream Mirror Editio comparison

Compare Vivo X21 UD
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Compare Oppo R15 Dream Mirror Edition
key specs
Display6.28-inch6.23-inch6.28-inch
ProcessorQualcomm Snapdragon 660MediaTek Helio P60 Qualcomm Snapdragon 660
Front Camera12-megapixel25-megapixel 20-megapixel
Rear Camera12-megapixel16-megapixel 16-megapixel
RAM6GB4GB6GB
Storage128GB64GB128GB
Battery Capacity3200mAh3400mAh3400mAh
OSAndroid 8.1Android 8.1Android 8.1
Resolution1080x2280 pixels1080x2280 pixels1080x2280 pixels
general
BrandVivoOppoOppo
ModelX21 UDF7R15 Dream Mirror Edition
Release dateMarch 1, 2018March 1, 2018March 1, 2018
Form factorTouchscreenTouchscreenTouchscreen
Dimensions (mm)154.50 x 74.80 x 7.40156.00 x 75.30 x 7.80155.30 x 75.00 x 7.50
Weight (g)156.20158.00175.00
Battery capacity (mAh)320034003400
ColoursRuby Red, Aurora White, BlackDiamond Black, Moonlight Silver, Solar Red,Dream Mirror Red, Ceramic Edition
Launched in India-Yes-
Removable battery-No-
SAR value-1.27-
display
Screen size (inches)6.286.236.28
TouchscreenYesYesYes
Resolution1080x2280 pixels1080x2280 pixels1080x2280 pixels
Protection type-Gorilla Glass-
Aspect ratio-19:9-
Pixels per inch (PPI)-405-
hardware
Processorocta-coreocta-core (4x2GHz + 4x2GHz)2GHz octa-core
Processor makeQualcomm Snapdragon 660MediaTek Helio P60 (MT6771)Qualcomm Snapdragon 660
RAM6GB4GB6GB
Internal storage128GB64GB128GB
Expandable storage-YesYes
Expandable storage type-microSDmicroSD
Expandable storage up to (GB)-256256
camera
Rear camera12-megapixel16-megapixel (f/1.8)16-megapixel
Rear flashLEDLEDLED
Front camera12-megapixel25-megapixel (f/2.0)20-megapixel
Rear autofocus-Phase detection autofocus-
Front flash-No-
software
Operating systemAndroid 8.1Android 8.1Android 8.1
SkinFunTouch 4.0ColorOS 5.0ColorOS 5.0
connectivity
Wi-FiYesYesYes
Wi-Fi standards supported802.11 a/b/g/n/ac802.11 b/g/n/ac802.11 a/b/g/n/ac
GPSYesYesYes
BluetoothYes, v 5.00Yes, v 4.20Yes, v 4.20
USB OTGYesYes-
Headphones3.5mm3.5mm-
Number of SIMs222
NFC-No-
Infrared-No-
FM-Yes-
Wi-Fi Direct-YesYes
sim 1
SIM TypeMicro-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sim 2
SIM TypeMicro-SIMNano-SIMNano-SIM
GSM/CDMAGSMGSMGSM
3GYesYesYes
4G/ LTEYesYesYes
sensors
Compass/ MagnetometerYesYes-
Proximity sensorYesYesYes
Ambient light sensorYesYesYes
GyroscopeYesYes-
Fingerprint sensor-Yes-
Accelerometer-YesYes
ratings
Overall NDTV Rating-Read Review-
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--

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