Several people have reported a problem in which iPhone 4S drops the network, preventing them from making calls, sending text messages and/or accessing the internet. It has also been reported that resetting network settings is not fixing the issue. Turning the iPhone on and off fixes the issue for a short period of time but then the network is dropped again. However, it seems that disabling SIM PIN solves the problem, that is, until Apple finds a permanent resolution. To disable SIM PIN:
- iPhone: Settings > Phone > SIM PIN > slide the SIM PIN to Off.
More:
iOS: Understanding the SIM PIN
Obsessed with tech since the early arrival of A/UX on Apple, Sudz (SK) is responsible for the editorial direction of AppleToolBox. He is based out of Los Angeles, CA.
Sudz specializes in covering all things macOS, having reviewed dozens of OS X and macOS developments over the years.
In a former life, Sudz worked helping Fortune 100 companies with their technology and business transformation aspirations.
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I cant use phone coz Simpin what. Is the code pls
After reading about how people are having problems with their iphone losing network coverage and wifi, i found out that turning off the sim pin function resolves, like turning the phone off then on again this only solves the problem temporarily then it goes back to having NO SIGNAL, if anyone has any similar probs then i think it is apple themselves who need to resolve this and not the network provider as it seems to be a hardware/software issue with the phone it’self.
if annyone can provide any other ways to resolve this then i think a lot of people would be very relieved.