To transfer your phone number to a new phone on T-Mobile, you are either upgrading a device on an existing T-Mobile line or porting a number from another carrier. Before starting, back up your data and confirm your new phone is compatible with the T-Mobile network to ensure a smooth transition.
Before you transfer your phone number to a new phone on T-Mobile
You are likely in one of two distinct scenarios. The first is upgrading to a new phone while keeping your existing T-Mobile line. The second is porting your number from another wireless or landline carrier to T-Mobile for the first time. In both cases, you must back up your data and check your new phone's compatibility before proceeding.
Back up your data
Backing up your data protects your contacts, voicemail, text messages, photos, and other files. Your voicemail will reset after the transfer, so preserving it now is essential. Use cloud services such as Google Drive, iCloud, or Dropbox to sync your data automatically. Sync contacts and calendars with your Google account on Android or iCloud on iOS. Transfer media files like photos, videos, and music to a computer or external storage device. Use the built-in backup features on your Android or iOS device to save settings and app data. After backing up, verify that all important data is securely stored before proceeding with the transfer.
Check your new phone's compatibility
If you are bringing your own device to T-Mobile, ensure it is unlocked by your previous carrier and compatible with the T-Mobile network. Use T-Mobile's IMEI checker to confirm compatibility. You can find the IMEI number on the original packaging or by dialing *#06# on the phone's keypad. Also confirm that the device supports T-Mobile's network bands and technologies, including 5G if you want access to T-Mobile's 5G network.
Option 1: Transfer your number to a new phone on an existing T-Mobile line
If you are upgrading to a new phone on an existing T-Mobile line, you can activate the new device using the T-Life app. First, ensure SIM Protection is disabled in your account settings. Open the T-Life app, go to the Account tab, and select "SIM transfer or activation." Choose "Get Started," enter the new device's IMEI, and select whether you are activating a physical SIM or an eSIM. For a physical SIM, enter the ICCID. For an eSIM, enter the EID. Then select "Activate" to complete the process.
To transfer an eSIM between iPhones, both devices must support eSIM and have the latest software. Turn on Bluetooth on both devices and ensure the old iPhone has a passcode set. On the new iPhone, go to Settings > Cellular > Set Up Cellular (or Add eSIM), choose "Transfer from another iPhone" or "Transfer from Nearby iPhone," select the number you want to transfer, and confirm the transfer on your old iPhone.
Option 2: Port your number from another carrier to T-Mobile
Porting your number to T-Mobile requires gathering your current carrier's account number, account PIN or passcode, and billing zip code. Do not cancel your current service with your previous provider until the number transfer to T-Mobile is fully completed. You can initiate the transfer online during checkout, through the T-Life app, by calling 1-800-T-Mobile (postpaid) or 1-877-778-2106 (prepaid), or by visiting a T-Mobile store. Wireless number transfers typically complete within 10 minutes to 3 hours, while landline transfers can take 3 to 10 days. T-Mobile's process for porting and releasing phone numbers is designed to make moving your number as seamless as possible.
After the transfer: activation and troubleshooting
Once the transfer is complete, power on your new phone and test calls, texts, and mobile data. If service is not working, restart your phone, reinsert the SIM card if using a physical SIM, check that your phone is unlocked, reset network settings, or contact T-Mobile Customer Care at 1-800-T-Mobile.
Frequently Asked Questions
Is there a fee for transferring my phone number to a new phone on T-Mobile?
Transferring your phone number to T-Mobile is free of charge.
Can I transfer my T-Mobile phone number to a different carrier's phone?
Yes, you can port your T-Mobile number to another carrier. You will need to initiate the port with the new carrier and provide your T-Mobile account number and PIN. Do not cancel your T-Mobile service until the port is complete.
What if I am not the primary account holder?
If you are not the Primary Account Holder, you may need their permission or for them to initiate certain transfer requests. Contact T-Mobile support for guidance specific to your account.
Will my voicemail reset after the transfer?
Yes, your voicemail will reset after the number transfer. Back up any important voicemails before starting the process.
