network issues

both sim? or only one

first send feedback to Samsung customer care.
just tap on +plus icon at members app homepage
then go to error report choose specific option and send

Now do these steps to check ur sim card strength; 

1. Go to about phone

2. Status

3. Sim Card Status

4. Signal strength 

I'm also facing same problem.

check your network status though Samsung members app. go to get help and at the first tab there was check up section click on that and check your status.

ok send feedback to samsung or wait for update most of smarphone facings networks issue

Exactly what network issue u r facing

Dear Samsung Member,

Greetings from Samsung Customer Support!

Please perform the below mentioned steps to resolve the issue:

 

* 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).

Thank you for writing to Samsung.

 

Warm Regards,
Samsung Customer Support