My battery is really performing weird since a month.
Battery percentage drops suddenly when I turn on my phone after sleep.
Suppose, I turn off my phone at 80% and I turn it back on after an hour, the battery will suddenly drop to 76% and it will remain at that percentage for 30-40 mins.
This problem occurs even during airplane mode or when the phone is switched off.
I have tried
• discharging to 0% and charging to 100%
• factory reset from settings 4 times
• battery calibration app
But nothing seems to work
And the best thing is that my battery usage is more or less still the same as I am getting 10 hour Screen On Time on average.
There's no problem with my network strength... Here's my battery stats, from stock and gsam.

Battery percentage drops suddenly when I turn on my phone after sleep.
Suppose, I turn off my phone at 80% and I turn it back on after an hour, the battery will suddenly drop to 76% and it will remain at that percentage for 30-40 mins.
This problem occurs even during airplane mode or when the phone is switched off.
I have tried
• discharging to 0% and charging to 100%
• factory reset from settings 4 times
• battery calibration app
But nothing seems to work
And the best thing is that my battery usage is more or less still the same as I am getting 10 hour Screen On Time on average.
There's no problem with my network strength... Here's my battery stats, from stock and gsam.

