Features:
Two SIM Cards available in one mobile phone
Auto-switch between SIM Cards; Enable to edit switching time
Enable to edit display name of SIM
Perfectly fitting iPhone 4 gives a non-slip coating

Installation:
Stick "SIM-1" plate into MicroSIM tray.
Stick SIMs onto each plate accordingly, fold the link and put MicroSIM tray back to slot.
Put iPhone 4 into the case.

Instruction:
1, Enter Setup -Phone - SIM Applications, it shows "Q-SIM" menu:
Switch Number
*Auto/SW
Setup
"Switch Number" offers SIM options: "SIM-1" & "SIM-2" which
Makes SIM work individually whilst "Auto/SW" makes both SIM
Work alternately. "*"stands for selecting successfully.
2, "Setup" menu provides below options:
SIM1 NO.
SIM2 NO.
SIM1 Time: 03
SIM2 Time: 03
Edit SIM number(11 characters)by selecting "SIM1 NO. " & "SIM2 NO. ".
Edit switch time by selecting other two options. Default switch time: 3min. Available switch
Time: 0 ~ 99min