Samsung has given in Oreo update to j7 2016 that is the good thing. But after the update there is a network problem in the network connection. Network get disconnected in 10 to 15 minutes and it happens frequently.
With the security update of December the problem of network connection has not solved. I come to know this when I was playing PUBG MOBILE the network was getting disconnected with the server. In 30 minutes it happen twice.
I hope you will look forward to this problem and immediately send the next update to solve this problem.
at 1 that the network issues are mostly from your service provider so you have to chk that the same problem face in other operated or not. to do this you have to use other service provider SIM card.
2 you can reset your network settings .
3 I hope your problem is solved in above two steps if not then try to select network manual.
