Troubles making calls on Samsung s7 edge

[galaxyroid]

I having problem calling I can send text messages but can't call it was original lock to sprint but I unlocked it and try used att prepaid what can I do

[LongHiker]

@galaxyroid You will need to contact AT&T to see if they still support that device. 

[spacetheghost]

Even though technically the s7 edge may be listed as a usable device, the 3G network is no longer supported and therefore calling features for the device would rely strictly on only a portion of the 4g network you may also have to check and see what coverage you have available. Even though it should technically be eligible for use it's been phased out by the recent network changes and could be the reasons for your issues

[theminitechgeek1]

Wait the s7 edge uses 3g? I thought it used 4g

[Hake]

It does, but it might not support calls over LTE is my understanding

[theminitechgeek1]

My mom used to have a galaxy s7 and she could make calls on LTE

[meself]

I would be very surprised If yhe s7 would be supported i.e work on 5g or 4g networks