iPhone occasionally require my Sim code???Any idea?
My iPhone was unlocked using anySim. Now I'm using a double number Sim so sometimes when I was using the phone, a message pop up saying that Sim need to be unlocked and after that i have to key in the Sim Pin number. More strangely, I lost my signal and had a black spring board after that. in order to get them all back, I have to shut off the phone and turn it on again. Has anyone got this problem before? I think that it is cause by the double number Sim. is there any ways to cope with this? Please let help me if someone has faced this problem before. Thank you in advance.