Battery draining issue

[Shubham_Sharma]

My battery not even lasting 1 hour with screen on or 3 hours with screen off
It has been after the 0.87 update
Will Asus fix this issue in the next update or we have to get a new smartphone of other brand
Is anyone else facing the same issue

My device has been 2.5 years old and still my battery backup was good until last 0.82 update

[AJ1]

roysauvik8334

https://zentalk.asus.com/en/discussion/comment/134382#Comment_134382

If I change my battery . Then any problem to be able ?

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Hmm... Not sure but shud be solved. As even I hav that question if for e.g 50 mobiles r working on. 87 update, where 15 mobiles are facing issues after updating to. 87 but other remaining are not facing the issues on same update. Then probably there may b some issue in hardware if asus claims that no bug on. 87 update. If not, then there may b bugs coming on phones while updating the mobile to. 87 update.

[ayan_brahmachar · Accepted solution]

There is clear issue in .87 update. After update to this version battery drains drastically. And after troubleshooting I found that the CPU never gets idle. CPU always runs at a average of 30-50% utilization even in idle condition. And at night, if you turn off the wifi & mobile data at night the CPU utilization increase to 50-70% on continuous basis. Thats why it is eating more battery at night than in morning.
Me and one of my friend's phone was having same battery drain issue after updating to .87 version. Yesterday he updated to Lineage OS and his battery is now working well. Since morning (14 hours) I lost 65% battery whereas he lost only around 25%
Asus must at-least admit the bug and release a fix for this battery draining.
We don't need A10, just give a solution to this battery issue. Or just roll back last 2 updates 84 & 87.

[mailme_sujoy220]

@ayan.brahmachary how did you figure out the CPU issue ? Did you visit service center? If not kindly let us know the process ? Did your battery backup is good after downgrading ?

[ayan_brahmachar]

@mailme.sujoy220 got this CPU stats from GSAM Battery Monitor. I have given it battery stat access and hidden API access.
If someone observes carefully last good ROM was 0.82 (or something like this).. After updating to 0.84 the problem stared but that time battery issue was not such significant. It just increased a bit. From 0.87 the battery issue got severe. Android OS and Kernel is always using the CPU.
Service centre would not help. They will push you to get a replacement battery with a hefty cost. But It will not help with the battery issue. Myself and my friend bought our phone same day and we both were having same issue after updating to 0.84 & 0.87.. But now after changing to Lineage OS my friend's battery issue is resolved. Thats why I'm also considering to may be switching to Lineage OS.

[Akasha]

Switching to Custom ROM Would be a better option already.
Pick up some stock ones, like Paranoid proving to be both battery and performance efficient.
Most Importantly No Bugs at all!!
Besides, I also used to get some battery drain in Default asus Stock ROM (Not Sure which version, maybe 9 or could be 10), remember restricting battery use in background for most of the apps. Check Out If That works.