User profile for user: brenden dv brenden dv User level: Community Specialist Nov 13, 2017 12:58 PM in response to Rudresh2 Hi, Rudresh2! Thanks for stopping by the Apple Support Communities. I see that you're having some trouble making and receiving phone calls since updating to iOS 11.1.1. I'd be happy to help! Based on the information you've provided, I would recommend following the steps here: If you can't make or receive calls on your iPhone - Apple Support Cheers! Show more Less Reply Link