1. AC Question's Avatar
    I am using my AT&T Galaxy S5 (SM-G900A) on T-Mobile Network. It is working just fine but the only feature that I can not make work is Mobile HotSpot or Tethering. I get Mobile Data is not available or invalid SIM. Can someone advise please.
    07-28-2014 04:01 PM
  2. Dave Hindle's Avatar
    Hi did u manage to solve this - having same problem on my AT&T S5 on 3 Network
    08-26-2014 12:04 PM

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