Karbonn A40 Indian vs Jio Phone vs Airtel Red comparison

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Ratings
Overall NDTV Rating---
Design Rating---
Display Rating---
Software Rating---
Performance Rating---
Battery Life Rating---
Camera Rating---
Value for money Rating---
General
Release dateJuly 2017July 2017February 2015-
Form factorTouchscreenBarTouchscreen-
Weight (g)249.00---
Battery capacity (mAh)140020001300-
Removable batteryYesYesNo-
ColoursBlack, Blue, Gold, RedBlack--
SAR ValueNANANA-
Display
Screen size (inches)4.002.403.50-
TouchscreenYesNoYes-
Resolution480x800 pixels240x320 pixels320x480 pixels-
Hardware
Processor1.3GHz 1.2GHz dual-coredual-core-
Processor make-SPRD 9820A/QC8905Qualcomm-
RAM1GB512MB512MB-
Internal storage8GB4GB4GB-
Expandable storageYesYesYes-
Expandable storage typemicroSDmicroSDmicroSD-
Expandable storage up to (GB)3212832-
Camera
Rear camera2-megapixel2-megapixel3-megapixel-
FlashYesNoNo-
Front camera2-megapixel0.3-megapixelNo-
Software
Operating SystemAndroid 7.0KAI OS Android 4.4-
Connectivity
Wi-FiYesYesYes-
Wi-Fi standards supportedNANANA-
GPSYesYesYes-
BluetoothYesYes, v 4.10Yes-
NFCNoYesNo-
InfraredNoNoNo-
Headphones3.5mmYes3.5mm-
FMYesYesNo-
Number of SIMs211-
SIM1
SIM TypeMicro-SIMNano-SIM--
GSM/CDMAGSMGSMGSM-
3GYesNoYes-
4G/LTEYesYesNo-
SIM2
SIM TypeMicro-SIM---
GSM/CDMAGSM---
3GYes---
4G/LTEYes---
Sensors
Compass/ MagnetometerNoNoNo-
Proximity sensorNoNoYes-
AccelerometerYesNoYes-
Ambient light sensorNoNoNo-
GyroscopeNoNoNo-
BarometerNoNoNo-
Temperature sensorNoNoNo-