Question: Iphone 7Plus experiencing "Call Failed" on Airtel Nnetwork
I am using Iphone 7Plus on Airtel network and have been experiencing a lot of call drops lately. When I try to call someone, the call drops off before even connecting or sometimes it drops in middle of a call and I get a pop up saying "Call Failed" post which it returns to home screen. I have also received multiple complaints from people who try to call me, that they don't hear any ringtone and are unable to reach me on multiple occasions.
I have replaced my Airtel sim thinking that the sim could be the culprit. Unfortunately the problem still exists.
I am now assuming it to be some serious issue with the Apple hardware so don't know how to proceed with contacting Apple and reporting this.
I purchased the phone in July 2017 from one of the retail stores in Dubai.
Can someone please help me?
iPhone 7 Plus, iOS 11.2.1