P1577270505827 , via OnePlus 7T , Jan 17, 2022 : Recently an issue with 7T is that callers are getting a reply that mobile is switched off or out of courage area. I heard the same issue with my friend also who is having 7T. Again I have to switch off and switch on the mobile to start receiving calls. My friend had factory reset the mobile but still the issue exists. Any solution ?