Microsoft Lumia 430 ($ 52)

Features:
SensorsAccelerometer, Proximity

Specifications:

BuildOSMicrosoft Windows Phone 8.1, planned upgrade to Windows 10
Dimensions120.5 x 63.2 x 10.6 mm
Weight127.9 g
SIMDual-SIM, Dual Standby, Micro-SIM
ColorsBlack, Orange
Frequency2G BandSIM1: GSM 850 / 900 / 1800 / 1900
SIM2: GSM 850 / 900 / 1800 / 1900
3G BandHSDPA 900 / 2100
ProcessorCPU1.2 GHz Dual-Core Cortex-A7
ChipsetQualcomm MSM8210 Snapdragon 200
GPUAdreno 302
DisplayTechnologyCapacitive touchscreen, 16M colors, Multitouch
Size4.0 inches (~58.8% screen to body ratio)
Resolution480 x 800 pixels (~235 ppi pixel density)
MemoryBuilt-in8GB built-in, 1GB RAM
CardmicroSD card (support up to 128 GB)
CameraMain2 MP, 1600 x 1200 pixels
Features1/5'' sensor size, Video (480p@30fps)
FrontVGA 480p
ConnectivityWLANWi-Fi 802.11 b/g/n, hotspot
Bluetoothv4.0 with A2DP
GPSYes + A-GPS support & Glonass
RadioFM radio
USBmicroUSB v2.0
NFCNo
DataGPRS, EDGE, 3G (HSPA 42.2/5.76 Mbps)
FeaturesSensorsAccelerometer, Proximity
Audio3.5mm audio jack, Speakerphone
BrowserHTML5
MessagingSMS (threaded view), MMS, Email, Push Email, IM
GamesBuilt-in
TorchNo
ExtraOneDrive (30 GB cloud storage), Document viewer/editor, Video/photo editor, Speakerphone
BatteryCapacity1500 mAh
Standbyup to 720 hrs
Talktimeup to 13 hrs