Verify if the SIM card is functional by inserting it into another phone: Use a spare phone to check if the SIM card can connect to the network. Troubleshooting Steps for iPhone Devices 1.

In India, many users face SIM card problems after moving to a new phone. If key settings are not activated, your SIM may stop ...

How to activate a T-Mobile SIM card on your phone Activating a T-Mobile SIM card with your phone is the most common method. These steps show you how to do it: Power down your phone and then insert ...

Select Sim Manager or SIMS. Tap Add mobile plan or Download SIM card or Add SIM. Then follow the on-screen instructions and scan the QR code when prompted.