Hi guys,

I have owned a Huawei P20 Pro for around 4 months duration already. So far I am happy with the phone.

However, lately I had upgraded the version to 8.1.0.152(C636) with patch package of C636patch01, my EMUI is 8.1.0. I realised a new icon on the top left corner with VoLTE.

Since then, I realised my battery drainage quite fast even though at standby mode.

In my scenario:

Previosuly, from 1am tlll 7am (sleeping): battery dropped from 100% to 90%.

But lately, for the same timing/duration: battery dropped from 100% to 76%.

I never use the phone in between 1am till 7am.

Anyone can help out with explaination? Or is it the norm for the latest version or EMUI?
Thank you.