Do I Activate My Sim Card?

Note: You must activate your SIM card in the original device before switching it to a new device. If you removed it from another active device and didn't deactivate it, then it's still active. All you need to do is insert it in your new device. All usage will be billed to the account associated with the SIM card.

What does it mean to activate a SIM card?

A SIM card is how your telephone number is associated with your phone. Activation refers to either moving your existing cellular service (the SIM card) from another phone into the new phone or signing up for a new service plan (to get a new SIM card) to put in the new phone.

Do you put the SIM card in before or after activation?

Before you activate your SIM:

If you have an old SIM card, keep it until you've completed all activation steps for your new SIM card.