Celkon Campus A20 ($ 48)

Specifications:

GENERALRelease dateAug-13
Form factorTouchscreen
Battery capacity (mAh)1500
Removable batteryYes
DISPLAYScreen size (inches)4
TouchscreenYes
Resolution480x800 pixels
Pixels per inch (PPI)233
HARDWAREProcessor1.2GHz dual-core
RAM256MB
Internal storage512MB
Expandable storageYes
Expandable storage typemicroSD
Expandable storage up to (GB)32
CAMERARear camera3.2-megapixel
Rear FlashLED
Front camera0.3-megapixel
SOFTWAREOperating SystemAndroid 4.2
CONNECTIVITYWi-FiYes
Wi-Fi standards supported802.11 b/g/n
GPSNo
BluetoothYes
NFCNo
InfraredNo
USB OTGNo
Headphones3.5mm
FMYes
Number of SIMs2
SIM 1SIM TypeRegular
GSM/CDMAGSM
3GYes
4G/ LTENo
SIM 2SIM TypeRegular
GSM/CDMAGSM
3GNo
4G/ LTENo
SENSORSCompass/ MagnetometerNo
Proximity sensorYes
AccelerometerYes
Ambient light sensorNo
GyroscopeNo
BarometerNo