Oppo R9 vs Oppo R7 vs Apple iPhone 6 vs Xiaomi Mi 4 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
Display5.50-inch5.00-inch4.70-inch5.00-inch
Processor2GHz octa-core1.5GHz octa-core1.4GHz dual-core2.5GHz quad-core
Front Camera16-megapixel8-megapixel1.2-megapixel 8-megapixel
Resolution1080x1920 pixels1080x1920 pixels750x1334 pixels1080x1920 pixels
RAM4GB3GB1GB3GB
OSAndroid 5.1Android 4.4iOS 8.0Android 4.4
Storage64GB16GB16GB16GB
Rear Camera13-megapixel13-megapixel8-megapixel 13-megapixel
Battery Capacity2850mAh2320mAh1810mAh3080mAh
general
Release dateMarch 2016-September 2014July 2014
Form factorTouchscreenTouchscreenTouchscreenTouchscreen
Dimensions (mm)151.80 x 74.30 x 6.60143.00 x 71.00 x 6.30138.10 x 67.00 x 6.90139.20 x 68.50 x 8.90
Weight (g)145.00147.00129.00156.00
Battery capacity (mAh)2850232018103080
Removable batteryNoNoNoNo
Colours-Silver, GoldSilver, Gold, Space GrayWhite
Launched in India--YesYes
Body type--Metal-
display
Screen size (inches)5.505.004.705.00
TouchscreenYesYesYesYes
Resolution1080x1920 pixels1080x1920 pixels750x1334 pixels1080x1920 pixels
Pixels per inch (PPI)401441326-
Aspect ratio--16:916:9
hardware
Processor2GHz octa-core1.5GHz octa-core1.4GHz dual-core2.5GHz quad-core
Processor makeMediaTek MT6755Qualcomm Snapdragon 615Apple A8Qualcomm Snapdragon 801
RAM4GB3GB1GB3GB
Internal storage64GB16GB16GB16GB
Expandable storageYesYesNoNo
Expandable storage typemicroSDmicroSD--
Expandable storage up to (GB)128128--
camera
Rear camera13-megapixel13-megapixel8-megapixel (f/2.2, 1.5-micron)13-megapixel (f/1.8, 1.12-micron)
Rear flashLEDDual LEDDual LEDLED
Front camera16-megapixel8-megapixel1.2-megapixel (f/2.2)8-megapixel (f/1.8)
Rear autofocus--Phase detection autofocusYes
software
Operating systemAndroid 5.1Android 4.4iOS 8.0Android 4.4
SkinColorOS 3.0ColorOS 2.1-MIUI 6
connectivity
Wi-FiYesYesYesYes
GPSYesYesYesYes
BluetoothYesYes, v 4.10Yes, v 4.20Yes, v 4.00
NFCNoNoYesNo
InfraredNoNoNoYes
USB OTGYesYesNoYes
Headphones3.5mm3.5mm3.5mm3.5mm
FMNoYesNoYes
Number of SIMs2211
Wi-Fi standards supported-802.11 b/g/n802.11 a/b/g/n802.11 a/b/g/n/ac
Lightning--Yes-
Micro-USB---Yes
sim 1
SIM TypeMicro-SIMMicro-SIMNano-SIMMicro-SIM
GSM/CDMAGSMGSMGSMGSM
3GYesYesYesYes
4G/ LTEYesYesYesNo
sim 2
SIM TypeMicro-SIMNano-SIM--
GSM/CDMAGSMGSM--
3GYesYes--
4G/ LTEYesNo--
sensors
Compass/ MagnetometerNoNoYesYes
Proximity sensorYesYesYesYes
AccelerometerYesYesYesYes
Ambient light sensorYesYesYesYes
GyroscopeYesYesYesYes
BarometerNoNoYesYes
Temperature sensorNoNoNoNo
Fingerprint sensor--Yes-