Activate My New T Mobile Sim Card. Log in and go into Account SIM Cards where you will see a list of all of your cards with an option to Reactivate My SIM Card. Be sure youre connected to Wi-Fi on your phone and head to Metro by T-Mobiles Self-Service Center.
To activate your new SIM card online first insert your new SIM card and then go to the T-Mobile SIM website. You will need to follow these steps and most likely reach out to care in order to activate the SIM. The SIM card number is located on the back of the box.
T-Mobile recently launched new 5G standalone technology which will enable our customers to get more 5G in more places when using a compatible SIM and device.
Log in with your account credentials or create an account if you do not yet have one by selecting Sign up for T-Mobile ID. If you have multiple lines choose the line youre changing the SIMeSIM on. This is the first step to reactivating your T-Mobile SIM card. Power on the iPhone and wait until the device stops searching for signal.
