2phone Dual SIM Power Case for iPhone 4 White One

2Phone Dual SIM Power Case For iPhone 4 white one support 4bands not only support 900/1800 but also support 850/1900
Function1 Dual SIM
Network type: : GSM dual bands 900/1800
Talking time: : 500min
Standby time: 288h
Operating system: Apple IOS
This Function will make you iPhone4 have SIM dual standby
Function2 Power pack
2Phone is compatible with iPhone 4 perfectly, it can make your iPhone 4 Dual SIM Dual Standy or Dual Mode Dual Standby.
Two SIM cards online, no need to switch network, then you can enjoy calling, phone answering and message sending as you like.

Dual SIM Dual Standy: GSM 3G(WCDMA)
Dual Mode Dual Standby: GSM CDMA
Function3 case and Protects
Cut outs for all the iPhone 4's features, gives pefect protection. Removable bumper of different colors
Protects your phone from bumps &
Scratching and gives a non-slip coating.
Durable fire-proof engineering material with piano Finish gives a great hand free

Description
Diemnsion & Weight
Height: 126mm Width: 61.8mm Thickness:
16.3mm Weight: : 59g
Network type
GSM Dual Channel 900/1800
Language Compatible with: English, German, Simplified Chinese, Traditional Chinese

Power & Battery
Battery: 3.7V/800mAh
Input/Output: 5V/500mA
Talk time: 500min
Standby time: 288h
Internet Use
Network 3G: Up to 6h
Network WLAN: Up to10h
Video play: Up to10h
Audio plat: Up to 40h

Accessories:
2Phone x 1PCS
Battery x 1PCS
Frame x 1 PCS
USB cable x1 PCS