Many users with jailbroken iPhones reported these messages. If you recently pulled the sim out of the phone and the phone was turned on, you may see Invalid Sim or Sim card failure. While the reasons for all the error messages are more or less the same, these two usually appear because the sim card has moved or because the card is damaged. There are also Invalid SIM cards and SIM card failures. IPhone no SIM card installed error is not the only sim-related message you may see. What to do if your iPhone says Invalid SIM card or SIM card failure? It will also install the latest version of iOS. The iTunes software will now erase your iPhone, including all your data, and it will restore your device to its factory defaults. Find Restore in the Summary panel, and click on it. Once it is connected, choose your device in iTunes. Connect the phone to your computer via USB cable. Solution No.8: Restore your device to factory defaults using iTunesįirst, check if you have the latest version of iTunes, and backup your data. Tap Download and Install or Install Now (if you already downloaded the latest version of iOS).
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