1. 2 numbers in 1 phone,Same size with a normal sim card ,so will fit your mobile phone card slot well.
2 NO POWER OFF Needed, SWITCH NUMBER ONLINE through "SIM Tool Kit" (STK)
3. Rename SIM card with your mobile number on menu, to assist you in
distinguishing between the SIM Cards from the STK Menu. Show acitive number on screen, Your main screen will also display the number you have keyed in (some phone models don't support this feature),The phone will tell you which SIM card you're using
4. Used with Single SIM card or double SIM card synchronously("AUTO SWITCH" feature ,Auto Switch time of two card can be set through the menu, auto switch time :0-99 min. the dexter is mobile screen picture that 5th ERA Dual SIM Card is installed in, not 9th ERA,but it is the same in the main ). "AUTO SWITCH" feature enables your phone to accept messages and phone calls from both SIM Cards synchronously.
5. Support almost all GSM mobile which has STK function. such as Motorola, Nokia, Samsung, SonyEricsson, Panasonic, Siemens, LG and more