Use these steps to update a T-Mobile for Business SIM card number in the Account Hub.

Change a SIM card

1.  Log in to Account Hub.
2. Go to Manage Accounts. If you have multiple accounts, select the desired account.
3. From the Manage Lines tab, select the three dots for the desired line and select Change SIM. 
4. Select Yes on the 2 Factor Authentication window. Complete verification steps using email or Google Authenticator.
5. If you have multiple accounts, select the desired account. 
6. From the Manage Lines tab, select the three dots for the desired line and select Change SIM. The Change SIM window appears. 
7. Enter and confirm the new SIM card number, then select a reason for change. 
8. Select Submit change. You'll receive a transaction number, which can be viewed on the Transaction History page.

If you’re unable to perform the steps on this page, visit the Account Hub User Management page as your profile permissions may need to be updated by your Account Admin or Business Owner.