It's not even a year & my battery drain off in 8 hours. Very disappointed. As well as issue in Sim 1 Slot (sim not inserted notification) show randomly and stop sim usage.
Go to settings, device care, battery and click on battery usage and see which app is using the battery too much. On experimental basis, delete those apps ans see how your phone performs. If the problem still persist even after removing those apps then try with hard reset of your phone and even if that doesn't work please visit service centre. If this solves your problem then click on the 3 dots and select "accept as solution".
