Hi,

I purchased iPhone 6S on 18/09/2016. I started facing network issues in 6 months. I have checked with my SIM card operator (Vodafone). There is no issue from them. My iPhone does not catch the network. When I remove SIM card and use normal smart phone, it catches the network. Hence the issue is with iPhone. During warranty period I gave this phone for repair two time, however, the issues is still unresolved.