Hey Thanks Rohit. I had cleared out the dust from the right of the device. Also while doing that, luckily I was able to loosen up the tempered glass a bit from the right and put it back. Faced the issue only once since then. Looks like it worked.
1st let me thank you for acknowledging the frustration.Backup and Factory reset wud be too much effort for me at this time.Is there a way to troubleshoot which service of OS/UI causing the issue ?
This issue is not with any single specific App. So no point of clearing cache of any App. Whichever App I keep there, that App keeps relaunching.Softwares are all updated, especially Samsung UI and Home.