Rivo Rhythm RX48 ($ 34)

Features:
Audio3.5mm audio jack, Speakerphone

Specifications:

BuildOSAndroid OS, v4.4.2 (KitKat)
DimensionsN/a
WeightN/a
SIMDual-SIM, Dual Standby, Micro-SIM
ColorsGray
Frequency2G BandSIM1: 850 / 900/ 1800/ 1900
SIM2: 850 / 900/ 1800/ 1900
3G BandWCDMA 900 / 2100
ProcessorCPU1.2 GHz Dual-Core Processor
DisplayTechnologyFull Capacitive Touch Screen, 16M Colors
Size3.5 inches
MemoryBuilt-in4GB built-in, 512MB RAM
CardmicroSD card (supports up to 32GB)
CameraMain3.2 MP, autofocus, LED flash
FeaturesVideo (720p@30fps)
Front1.3 MP Camera
ConnectivityWLANWi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot
BluetoothYes
GPSYes + A-GPS support & Glonass
RadioFM Radio
USBmicroUSB v2.0
NFCNo
DataGPRS, EDGE, 3G (HSDPA, HSUPA)
FeaturesAudio3.5mm audio jack, Speakerphone
BrowserHTML
MessagingSMS (threaded view), MMS, Email, Push Email
Gamesbuilt-in + downloadable
TorchYes
ExtraGoogle Search, Maps, Gmail, Youtube, Calendar, MP4/WMV/H.264/H.263 player, MP3/AAC/WMA/WAV player, Google Talk
BatteryCapacity1300 mAh
Standbyup to 48 hrs
Talktimeup to 7 hrs