How do I activate my new T-Mobile phone?

On your new device, enter your current device password. If prompted, enter your Apple ID password. Follow the instructions to set up Face ID or Touch ID on your new device. If your old device used an eSIM, Transfer Cellular Plan will appear on the new device.

Can I just switch SIM cards between T-Mobile phones?

If your device didn’t come with a SIM card, just move the SIM from your old device to your new one and you’re good to go, no additional steps required.

Can I activate my own phone on T-Mobile?

If you want to bring your own phone, you’ll first need to check if your phone is compatible with the T-Mobile network and see if it’s unlocked. Some phones have network hardware that may not work well with T-Mobile’s network.

How do I transfer my service to my new phone?

Turn on your new device. Tap Start. When asked, make sure you connect to a Wi-Fi network. Choose to copy apps and data from your old device.
…
On your old device:
  1. Sign in with your Google Account. …
  2. Back up your data. …
  3. Check that you have a Wi-Fi connection.

Do you put SIM card in new phone before transferring data?

Regardless of the device you’re switching from, don’t switch your SIM card until the entire transfer is complete. Before you get started, you’ll also want to make sure both your old device and your new device have at least 20 percent battery life.

What happens if you take out your SIM card and put it in another phone?

Yes, If you put your sim card in another phone, your number will remain the same. As long as the sim card is compatible with the phone – meaning that the phone is unlocked or locked to the same carrier as the sim card – then, you will be able to use the sim on the phone with the same number.

How do I transfer my SIM card to a new SIM card?