Activate your iPhone back to AT&T if the SIM card you insert after you install blackra1n onto the device doesn't work properly. Blackra1n is a third-party program that "jailbreaks" SIM-bearing iPhones ...

If you've just got your hands on a shiny new Sim card, congratulations. Switching your Sim (the chip that dictates your allowance) can unlock huge savings. Now comes the crucial step of activating it ...

We previously reported that a tiny handful of iPhones shipped without SIM cards, while significantly more units have generated the error message "No SIM card ...

Once you've ordered a titanium Apple Card, it will be posted to you free of charge and you'll receive a notification on your iPhone when it ships. When your new titanium ‌Apple Card‌ arrives, the ...

To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.