Lenovo K80 ($ 0)

Features:
SensorsAccelerometer Compass Proximity  

Specifications:

BuildOSAndroid OS v5.0 (Lollipop)  
Dimensions8.5 mm thick  
Weight158 g  
SIMDual-SIM Dual Standby Micro-SIM  
ColorsBlack Silver Red  
Frequency2G BandSIM1: GSM 900 / 1800 / 1900
SIM2: GSM 900 / 1800 / 1900  
3G BandHSDPA 900 / 2100  
4G BandLTE band 1(2100) 3(1800)  
ProcessorCPU1.83 GHz Quad-Core  
ChipsetIntel Atom Z3560  
DisplayTechnologyIPS capacitive touchscreen 16M colors Multitouch  
Size5.5 inches  
Resolution1080 x 1920 pixels (~401 ppi pixel density)  
MemoryBuilt-in64GB built-in  4GB RAM  32GB built-in  2GB RAM  
CardmicroSD  card (supports up to 32 GB)  
CameraMain13 MP 4128 x 3096 pixels autofocus dual-LED flash  
FeaturesOptical image stabilization Geo-tagging touch focus face detection HDR panorama Video 1080p@30fps  
Front5.0 MP Camera  
ConnectivityWLANWi-Fi 802.11 a/b/g/n dual-band hotspot  
Bluetoothv4.0 with A2DP  
GPSYes + A-GPS support  
RadioFM Radio  
USBmicroUSB v2.0  
NFCYes  
DataGPRS  EDGE 3G (HSPA) 4G LTE  
FeaturesSensorsAccelerometer Compass Proximity  
Audio3.5mm audio jack  
BrowserHTML5  
MessagingSMS(threaded view) MMS Email Push Mail IM  
GamesBuilt-in  
TorchYes  
ExtraOrganizer Document viewer Active noise cancellation with dedicated mic Photo viewer/editor Voice memo/dial MP3/WAV/WMA/eAAC+ player MP4/H.264 player  
BatteryCapacity4000 mAh  
Standbyup to 520 hrs  
Talktimeup to 33 hrs