1) Change cards by switching on and off
2) No data lose when switching 2 numbers or turning on-off
3) Ultra slim 2 in 1 design, keep original sim card size and shape
4) Uses extra-thin FPC, SIM smart card technology
5) Conforms to ISO 7816 standard ,not affected by voltage and mixed signal
6) Suitable for all GSM mobile, no need to change back cover or battery
7) Suitable for GSM SIM cards

1) Enter into Dual sim card menu.
2) Show SIM1, SIM2, BOTH ON-LINE, EXPRESS, NORMAL and SLOW.
3) To select SIM1 or SIM2 to switch the online number
4) If you want to switch two numbers one by one ,please select BOTH ONLINE
5) Then show Express Normal and Slow, if selecting Express, the auto-switching
time is 2 to 4 minutes. If selecting Normal, the time is 5 to 6 minutes. When
selecting Slow, the time is 8 to 9 minutes.