Sony Xperia M ($ 142)

Features:
SensorsAccelerometer Compass Proximity  

Specifications:

BuildOSAndroid OS v4.1 (Jelly Bean)  
Dimensions124 x 62 x 9.3 mm  
Weight115 g  
ColorsBlack White Purple Yellow (single sim model only)  
Frequency2G BandGSM 850 / 900 / 1800 / 1900  
3G BandHSDPA 900 / 2100  
ProcessorCPUDual-core 1 GHz Krait  
ChipsetQualcomm Snapdragon S4 Plus MSM8227  
DisplayTechnology16M colors TFT capacitive touchscreen Multitouch (up to 04 fingers)  
Size4.0 inches  
Resolution480 x 854 pixels  
ProtectionScratch-resistant glass  
MemoryBuilt-in4GB built-in 1GB RAM  
CardmicroSD Card (supports up to 32GB)  
CameraMain5MP 2592 x 1944 pixels autofocus LED Flash  
FeaturesGeo-tagging touch focus image stabilization HDR panorama Video (720p@30fps)  
FrontYes  
ConnectivityWLANWi-Fi 802.11 a/b/g/n dual-band Wi-Fi Direct Wi-Fi hotspot  
Bluetoothv4.0 with A2DP  
GPSYes + A-GPS support  
RadioStereo FM radio with RDS  
USBYes  
NFCYes  
DataGPRS  EDGE 3G (HSDPA 21 Mbps HSUPA 5.76 Mbps)  
FeaturesSensorsAccelerometer Compass Proximity  
Audio3.5mm audio jack Speakerphone  
BrowserHTML5  
MessagingSMS(threaded view) MMS Email IM Push Mail  
Gamesbuilt-in + downloadable  
TorchYes  
ExtraGPU Active noise cancellation with dedicated mic Organizer Document viewer Photo viewer/editor Voice memo/dial Predictive text input  
BatteryStandbyUp to 498 hrs  
TalktimeUp to 10 h 16 m