GSM Freedom Mobile - How to Fix invalid SIM card error: 1. Try resetting network settings This step is a savior in most occasions. You should try resetting all present network settings.
![iPhone 12's: Sim Card Problems (No Service, Invalid SIM, No Sim Card or Constantly Searching? FIXED! - YouTube iPhone 12's: Sim Card Problems (No Service, Invalid SIM, No Sim Card or Constantly Searching? FIXED! - YouTube](https://i.ytimg.com/vi/xlwAxnbCwAA/maxresdefault.jpg)
iPhone 12's: Sim Card Problems (No Service, Invalid SIM, No Sim Card or Constantly Searching? FIXED! - YouTube
![Bought an iPhone on eBay for boost but it says invalid sim when I put it into new phone? : r/BoostMobile Bought an iPhone on eBay for boost but it says invalid sim when I put it into new phone? : r/BoostMobile](https://i.redd.it/2qw6vyzl4ft31.jpg)