1. AC Question's Avatar
    Hi,
    I have just unlocked my ATT S4 and inserted the sim card from verizon but there is no network connection. Is there any setting that I need to change or does the verizon sim not work with unlocked ATT phones.

    Thanks In Advance,
    Ron
    09-17-2014 10:37 AM
  2. Almeuit's Avatar
    You would have to contact Verizon to see --- Verizon has to approve every IMEI (phone) on their network before it can be used.

    If you go here (Set Your Location) and go to Step #2 -- You can enter the IMEI of your phone and it will tell you if it can be used on the Verizon network.
    B. Diddy likes this.
    09-17-2014 10:59 AM
  3. B. Diddy's Avatar
    I wonder if you'd be able to use it for calls, because Verizon still uses CDMA for voice signal (they only just started the VoLTE rollout). AT&T uses GSM for voice signal. So if that S4 doesn't have a CDMA radio, I don't see how it would be able to make calls.
    09-17-2014 11:00 AM
  4. RonLongJohn's Avatar
    Thanks for the reply. Will try it out.
    09-17-2014 11:12 AM

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