What Does Sim Invalid Mean - Causes of an 'invalid sim' error. Sim card not inserted correctly. Buy a new sim card. Remove your sim card, then reinsert it. And what if all else fails? The ‘invalid sim’ error can be triggered by various factors. How to fix invalid sim errors. Check for updated carrier settings in settings > general > about. Web correct network mode. Check for problems with your mobile account.
Boot your device into safe mode. Causes of an 'invalid sim' error. Check for updated carrier settings in settings > general > about. Web when your phone displays an ‘invalid sim’ error, it means it’s having trouble reading this information. Buy a new sim card. Perform a network reset and/or a factory reset. Remove your sim card, then reinsert it. Web correct network mode. How to fix invalid sim errors. Sim card not inserted correctly. The ‘invalid sim’ error can be triggered by various factors. Try your sim card in another device, and another sim card in your device. Check for problems with your mobile account. Web the invalid sim card error typically indicates that your mobile device is unable to recognize or authenticate the sim card inserted into it. Restart your iphone or ipad. Here are some of the most common causes: And what if all else fails?