1. felixa123's Avatar
    New guy here. I was wondering If there's a way I can unlock the AT&T Galaxy s4 active and make it work for a Tmobile prepaid plan? Thanks
    01-05-2014 12:35 AM
  2. moody1940's Avatar
    Call AT&T customer service and they will give you the unlock code for your phone. Call t-mobile and get a SIM card

    Sent from my SAMSUNG-SGH-I537 using AC Forums mobile app
    01-22-2014 10:30 PM
  3. Ricky Franscisco's Avatar
    I just went through this...it wasn't as easy as I expected, thus I'm posting to help others want to use a AT&T S4 Active on T-mobile; I found that my voice and data service was spotty, even nonexistent because of the AT&T network/APN configurations. If you have any issues, the following should resolve:

    Once you unlock the phone and insert your T-mobile SIM.

    1. Set your APN setting to what T-mobile provides on their site (T-Mobile internet & MMS APN settings | T-Mobile Support) . Make sure any and all characters, even, "*" are cleared from fields that do not have settings. One you have adjusted/saved the APN settings, restart your phone.

    2. Pull up your dial pad and enter *#*#4636#*#*. Press "Device information", below all the phone's data, touch the grey box displaying the network type the phone is set to. Press the network type, A list will appear-> select "LTE/GSM auto (PRL)". Hit the home button, restart phone.

    From there, your AT&T Galaxy S4 Active should work on the prepaid T-mobile SIM without issue.

    keithhess likes this.
    03-28-2014 08:16 PM

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