Network automatically goes down while using internet. In order to reestablish ,need to put the phone into flight mode and back. Tried the network settings to auto . But no use. I have factory resettled the phone and installed some basic apps and google apps. Still the problem exixts
Please perform the below mentioned steps to resolve the issue:
1. Check network operator settings Settings > Connections > Mobile networks > Network operators > Select automatically > OK > Registered on network.
Note: We recommend to set device network operators as LTE/3G/2G (auto connect) mode.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
I'm facing same issue with same model and i got the solution... Use single sim for calls and Internet and turn off another sim for a while. And now try... May be it will work because its working fine for me.
