Oppo A71 vs Oppo A57 vs Oppo F1s vs Asus ZenFone 2 ZE550ML comparison

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ratings
Overall NDTV Rating-Read ReviewRead Review-
Design Rating--
Display Rating--
Software Rating--
Performance Rating--
Battery Life Rating--
Camera Rating--
Value for Money Rating--
key specs
Display5.20-inch5.20-inch5.50-inch5.50-inch
Processorocta-core 1.4GHz octa-core1.5GHz octa-core1.8GHz quad-core
Front Camera5-megapixel 16-megapixel 16-megapixel 5-megapixel
Resolution720x1280 pixels720x1280 pixels720x1280 pixels720x1280 pixels
RAM3GB3GB3GB2GB
OSAndroid 7.1Android 6.0Android 5.1Android 5.0
Storage16GB32GB32GB16GB
Rear Camera13-megapixel 13-megapixel 13-megapixel 13-megapixel
Battery Capacity3000mAh2900mAh3075mAh3000mAh
general
Release dateSeptember 2017November 2016August 2016March 2015
Launched in IndiaYesYesYes-
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)148.10 x 73.80 x 7.60149.10 x 72.90 x 7.65154.50 x 76.00 x 7.38152.50 x 77.20 x 10.90
Weight (g)137.00147.00160.00170.00
Battery capacity (mAh)3000290030753000
Removable batteryNoNoNoNo
ColoursGold, BlackRose Gold, GoldGold, Rose Gold, Grey-
SAR value-1.31--
display
Screen size (inches)5.205.205.505.50
TouchscreenYesYesYesYes
Resolution720x1280 pixels720x1280 pixels720x1280 pixels720x1280 pixels
Aspect ratio16:916:916:9-
Pixels per inch (PPI)282--267
hardware
Processorocta-core (4x1.5GHz + 4x1GHz)1.4GHz octa-core1.5GHz octa-core1.8GHz quad-core
Processor makeMediaTek MT6750Qualcomm Snapdragon 435MediaTek MT6750Intel Atom Z3560
RAM3GB3GB3GB2GB
Internal storage16GB32GB32GB16GB
Expandable storageYesYesYesYes
Expandable storage typemicroSDmicroSDmicroSDmicroSD
Expandable storage up to (GB)25625612864
camera
Rear camera13-megapixel (f/2.2)13-megapixel (f/2.2)13-megapixel (f/2.2)13-megapixel
Rear autofocusPhase detection autofocusPhase detection autofocusPhase detection autofocus-
Rear flashLEDLEDDual LEDLED
Front camera5-megapixel (f/2.4)16-megapixel (f/2.0, 1.12-micron)16-megapixel (f/2.0)5-megapixel
Front autofocus-Yes--
software
Operating systemAndroid 7.1Android 6.0Android 5.1Android 5.0
SkinColor OSColorOS 3.0ColorOS 3.0ZenUI
connectivity
Wi-FiYesYesYesYes
Wi-Fi standards supported802.11 b/g/n802.11 b/g/n802.11 b/g/n802.11 a/b/g/n/ac
GPSYesYesYesYes
BluetoothYes, v 4.00Yes, v 4.10Yes, v 4.00Yes, v 4.00
NFCNoNoNoYes
InfraredNoNoNoNo
USB OTGYesYesYesYes
Micro-USBYesYesYes-
Headphones3.5mm3.5mm3.5mm3.5mm
FMYesYesYesYes
Number of SIMs2222
sim 1
SIM TypeNano-SIMNano-SIMNano-SIMMicro-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesYes
sim 2
SIM TypeNano-SIMNano-SIMNano-SIMMicro-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesNo
4G/ LTEYesYesYesNo
sensors
Compass/ MagnetometerYesYesYesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeNoYesNoNo
BarometerNoNoNoNo
Temperature sensorNoNoNoNo
Fingerprint sensor-YesYes-