New phone or SIM card activationGo to att.com/getstartedbiz.Select Activate your device for AT&T wireless device.Enter the required information.Select Continue.Follow the prompts to complete your activation.Oct 29, 2020
They can be reached at 1-800-T-Mobile or 1-800-866-2453. Follow the instructions after the prompt to activate your new T-Mobile SIM card.Jun 12, 2021
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.
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.
LineLinkShort codeWhat it does411Call the directory611Call Customer Care911Emergency call*72+PhoneNumberActivate unconditional call forwarding. Example: *72 (206) 111-11115 more rows
Device activation using the iOS Setup Assistant (Wireless thru a Cellular or Wi-Fi network):Power on the device.Press the Home button to begin.Select your language from the list.Select your country / region from the list.Choose a Wi-Fi network and, if prompted, enter the password then tap Join.More items...
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.
Answer: A: Yes, you move the SIM card before or after you start the transfer. I personally do it before. As part of the set up process on the new phone, you will be prompted to move the data over.Nov 19, 2021
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.Feb 25, 2022
See First use configuration and device activation: iPhone‌ for steps. Once a T-Mobile SIM card is placed into your iPhone or iPad, it should automatically install the latest Carrier Update. This will configure your device to connect to the T-Mobile network.