1. Download our Official Android App: Forums for Android!

Unlocked Tmobile Invalid SIM

Discussion in 'Android Help' started by Android Question, Feb 3, 2014.

  1. Android Question

    Thread Starter
    Rank:
    None
    Posts:
    0
    Joined:

    I recently unlocked my Samsung Galaxy S 3. I moved from T-Mobile to AT&T. Now, whenever I connect to wi-fi to make calls I get this error- Error- ER05 "invalid SIM"
    I have no idea what to do. I would go to the store, but I've had hell with them just trying to figure out how to make my unlocked phone work properly (I figured most of that out on my own). Please HELP!!
     

    Advertisement

  2. Rukbat

    Rukbat Android Expert
    Rank:
    None
    Points:
    843
    Posts:
    10,392
    Joined:
    Jan 16, 2012

    Jan 16, 2012
    10,392
    2,894
    843
    Male
    Being retired and writing Tasker tasks.
    Fayetteville, NC, USA
    Remove the SIM. Disable mobile data. Connect to wifi. Ignore the message.
     

Share This Page

Loading...