How to fix no data on Galaxy S7 Edge
Power off your device completely, then power it back on. Make sure you have a network connection (if you have No Service click here). Go to Settings > Data Usage and make sure mobile data is checked ☑ and there is no data limit blocking you.
Mobile Data Not Working || Mobile Data Not Connecting On Android/Samsung [Fixed]
https://www.youtube.com/watch?v=RTfrswBAMz8