If you're used to slapping a physical SIM card into a phone, here's how to activate a Cricket eSIM.

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

To eject a SIM card, insert a small paperclip or SIM ejecting tool into the tiny hole next to the SIM tray and gently press until the tray pops out.

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 ...