ASUS Zenfone 4 Max Battery

I updated my phone yesterday, then I noticed my batteries drains faster than before. And Im not doing anything with it! And I wanna ask if folks here are already updated to Oreo OS Thanks. Please dont make me regret buying this, I already recommended this to my friends

Before if I dont use it much. It stays at the same percentage. Now its draining rapidly 

Hello
Android Oreo has not yet available, please stay tune for further news!
Also, have you updated your phone to the latest firmware?
Thank you

It still drains at a fast rate as well as when it's sleep usually drains from 100% to 95%

How do you updatw the firmware?

bill2_chang_ASUS posted on 2017/10/12 18:04
Hello
Android Oreo has not yet available, please stay tune for further news!
Also, have you updated  ...

Hi bill, how can i update the firmware? Thanks

Settings then scroll down to system updates 

Hello all
Please go to settings>about>system update>check update
If the update process failed, please try manual update, for instructions please refer to the link below:
http://www.asus.com/zentalk/forum.php?mod=viewthread&tid=1158
Thank you