Rivo Rhythm RX55 ($ 45)

Features:
Audio3.5mm audio jack, Speakerphone

Specifications:

BuildOSAndroid OS, v4.4 (KitKat)
Dimensions126 x 64.2 x 8.9 mm
WeightN/a
SIMDual-SIM, Dual Standby
ColorsBlack, White
Frequency2G BandSIM1: 850 / 900/ 1800/ 1900
SIM2: 850 / 900/ 1800/ 1900
3G BandWCDMA
ProcessorCPU1.3GHZ Quad-Core
DisplayTechnologyIPS Display
Size4.0 inches
MemoryBuilt-in4GB built-in, 512MB RAM
CardmicroSD card (supports up to 32GB)
CameraMain5 MP, LED Flash
FeaturesVideo
FrontVGA
ConnectivityWLANWi-Fi 802.11 b/g/n
BluetoothYes
GPSNo
RadioFM Radio
USBYes
NFCNo
DataGPRS, EDGE, 3G
FeaturesAudio3.5mm audio jack, Speakerphone
BrowserHTML5
MessagingSMS (threaded view), MMS, Email, Push Email
Gamesbuilt-in + downloadable
TorchYes
ExtraGoogle Search, Maps, Gmail, Youtube, Calendar, Speakerphone
BatteryCapacity1500 mAh