How to Activate a New SIM Card With T-Mobile
- 1). Insert your SIM card into your phone. This requires taking the back cover off. You may have to remove the battery. Refer to your phone's user guide for detailed instructions.
- 2). Call T-Mobile customer service by dialing 611 from your phone. In many instances, customer service activates your SIM card without you having to walk into a store.
- 3). Take your phone to a T-Mobile store. If your SIM card cannot be activated over the phone, use T-Mobile's store locator to find one near you. Store personnel can activate the SIM card for you.
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