Akhilesh Haridasan , via OnePlus 9R , Aug 1, 2021 : Occassionally, my phone shows that no sim card are detected (even though SIM cards are there). It happens usually in the morning when I use my phone after a few hours break. Turning on and off the airplane mode doesn't work. Whereas, restarting the phone can temporarily solve the issue. Anyone on the same boat? Any permanent solutions, please?