After changing my display and charging port since my device didn't work after falling into water, my samsung s20 fe is having a very unstable network.For example:My jio sim is showing 0 point tower in my mobile always from 12 am to 7 am but if I cha...

Does samsung have feature to lock apps like how we set password for device, can we set password for whatsapp,insta,facebook according to our wish?I'm very much interested in that feature and since i started using samsung recently im very much missin...