Battery drain on standby.

[Kanu]

Please tell us some basic information before asking for help:
Model Name:
Firmware Version: .49
Rooted or not: No
Frequency of Occurrence: Everyday
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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I charged the phone till 92% and after one hour the battery is 82% and I haven't used anything. Just some searches in dictionary and a couple of WhatsApp messages. Auto start is denied for all apps except insta and WhatsApp. Only gestures in use are double tab to wake/lock, air trigger squeeze and pocket mode. This shouldn't happen. 3-4% is fine but 10? Sometimes it's even more than that. Phone is on 120hz.

[comeundon3]

My battery drain very fast also even not in use , its starting this 2 week......normally my screen on time was more then 10hour , now i have less then 5 hour screen on time , i just did factory reset and this still happen.
I were in malaysia