1. Open the Access Point Names or APNs menu.

    1. In Settings, look under Wireless & Networks or tap the Connections tab.

    2. Touch Mobile network. You may need to touch More settings, More..., or More networks first.

    3. Touch Access Point Names.

  2. Touch the T-Mobile APN if one is available. If not, press the Menu key and touch new APN.

  3. Verify and update the following settings for the Data APN.

    • Name: T-Mobile

    • APN: Fast.t-mobile.com (for LTE devices) or epc.tmobile.com (for non-LTE devices)

    • Proxy: <Not set>

    • Port: <Not set>

    • Username: <Not set>

    • Password: <Not set>

    • Server: <Not set>

    • MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc

    • MMS proxy: <Not set>

    • MMS port: <Not set>

    • MMS protocol: WAP 2.0

    • MCC: 310

    • MNC: 260

    • Authentication Type: <Not set>

    • APN Type: default,supl,mms OR Internet+MMS

      • Default Android provides a text field to enter: default,supl,mms.

      • Samsung provides an Internet+MMS radio button to select.

    • APN Protocol: IPv4/IPv6

    • APN roaming protocol: IPv4/IPv6 or IPv4 only when roaming internationally

    • Turn APN on/off: Grayed out unless there are multiple APNs

    • Bearer: Unspecified

  4. Press the Menu key.

  5. Touch Save.

  6. Delete any other APNs that appear in the list. The FOTA APN can remain if available.

    • Touch the APN that needs to be removed.

    • Press the Menu key.

    • Touch Delete APN.

  7. Verify there is a circle next to the remaining APN.

  8. Perform a soft reset. Hold down the power button until the device turns off and restarts.

  9. Test the data connection and/or MMS by accessing the Web or sending a picture message.

  10. Complete additional troubleshooting if the APN settings are correct, but customers still experience issues.

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