Every update, Indian units are facing a lot of problems. Galaxy devices with Exynos 9611 are facing restart issues and calling problems. Here is the solution: you must flash the firmware using PC and Odin. But remember: you must download over a stable Internet connection! If you update from OTA, and Internet isn't stable, the update may have corrupted files! Or another way, update over Smart Switch. But OTA over unstable Internet connection isn't recommended. I use stable network and I update from OTA. But if you do not have stable Internet, do not try to download. Try this, and if issue is not solved, visit service center.
