Hi bro, I charged my phone to 84% and started using it and faced heavy heating and massive charge drop, then disabled WiFi and connected to mobile internet, and shockingly mobile net 2.5 gb was consumed in 30 mins without using anything, I thought it might be any software update dowloading behind and there is nothing like that because already it is is latest software, what might be the issue you think bro?
hi bro, tap on that 6PM bar in the activity graph and see which app or system service used more screen off time and ON time.
Also try these steps.
as you were using mobile data, the background data can be found in the stats. else clear out and observe for next 24 hours which app or service runs in the background and consumes battery without your knowledge.
That will help to find out the root cause.
Possibly whatsapp, Snapchat and settings can use background data bro. observe for two more days and see as suggested in above video. see if same level of battery drain and data is used or not.