Can I just buy a SIM card?

If your existing phone uses GSM technology, there’s a good chance you can purchase a new SIM card for it . You just need to make sure it’s “unlocked” first. Some carriers include software that links the SIM card to the phone’s serial number. If the two don’t match, the phone won’t work.

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Can you get just a SIM card T-Mobile?

SIM Card – Bring Your Own Device to T-Mobile. Connect to the T-Mobile network when you Bring Your Own Device with this zero cost SIM card and start enjoying the benefits of our unlimited plans. The 3-in-1 SIM Starter Kit includes a Nano SIM card with Micro and Standard SIM adapters . Want to keep your phone number?

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