AT&T Samsung gs4 unlocked with Verizon

[jessokeefe10]

I have an unlocked samsung galaxy s4 from AT&T but my service provider is verizon. If I purchase a 4g lte SIM card from the verizon store will I be able to use it with this phone?

 

[B. Diddy]

The problem would be making calls, since Verizon uses CDMA (not considering VoLTE for now, since it isn't widespread yet) for voice calls. The AT&T S4 probably doesn't have a CDMA radio, only GSM. Using a SIM card from Verizon, you could get LTE mobile data, but no voice signal.