Hi there! My FP2 OS drains battery very fast. Even in plane mode, the phone can pass from 80% to 70% in few hours, while a few months ago it was kept at 80% all night in plane mode. Somebody with the same problem? When looking at battery use, miscellaneous is on the top of the list (sometimes more than 100%! :-S and other apps at 10% or 20% at most ). Any idea what is happening? In developer options I can see that settings is the one using more RAM.
Any ideas or help please?
Iāve got a similar problem after installing Open OS update 17.07.6. Reverting to 17.06.4 solved the problem for me (except that I canāt install any updates anymore for the time being). See here: FP2 Battery Problems (drains quickly, CPU gets hot) - See batteryguide for workarounds
It seems that āmiscellaneousā is now called āover-countedā in Marshmallow.
Iām having trouble with āover-countedā battery usage these last days and I also have wifi under battery usage, even if I donāt use wifi (and no location services either that could use wifi). I am on open 17.07.6.
I am facing the same problem on Fairphone Open 18.02.0:
Any ideas?
EDIT: The proximity sensor is causing a wake lock. So I removed all apps listening to the proximity sensor while the screenās turned off and that solved the battery drain problem. Is this wake lock behaviour intended or is it a bug?
Hi! I believe nobody found any solution for this problemā¦ Iāve tried to see some patternsā¦ What I saw so far is the following. First, not always but sometimes battery drains very fast, even in airplane mode. The only exception is when phone is in ābattery economy modeā. This is the only thing that prevents battery to drain fast. Iāve tried apps to track battery usage, greenify, etcā¦ Iāve found a workaround that works: Go to developer options/running apps/ click on āsettingsā and stop it. This solved my problem. Seems that take a look to battery use makes battery to drain faster in my case 
Why canāt I read that thread?
By the wayā¦ I found an interesting information about battery drain in Android 6.0 see here:
Indeed, I have some apps that I rarely use that use more battery than the most used apps. These rarely used apps show high amounts of mobile radio active.
More clearly:
You found an interesting information about battery drain in Android 5, which Google announced to fix in Android 6 according to this article from 2015 
.
āMany users have been experiencing a battery draining bug in Lollipop caused by the deviceās radio remaining active for too long, but only now is Google doing something about it. The fix is expected to roll out in Android 6.0.ā
haha yes youāre right! 
I meant that, as they mention āis expected toā, it is possible that this problem was not fixed (or has been fixed in more recent Android versions instead of 6.0). Because Iām using Android 6 and, as far as I can tell, Iām having the same problem. Maybe fairphone developers could take a look at it; it could partly explain the problems with battery drain that we are experiencing.
Fairphone developers are hard at work to deliver the upgrade to Android 7 due this summer, I doubt that much work will go into Android 6 anymore .
I tried to read that thread but it says I donāt have the permission to read itā¦ has it been perhaps deleted?
It was archived, but I doubt itās relevant anymore.
It was about a bug in Android 5 and weāre now on Android 7 and the bug hasnāt been reported since.
I have installed 7.1.2 open edition.
I donāt know if it is the same bug but I get a really high miscellaneous power usage. Currently at 72%. The power usage is so high that the power supplied byan computer USB plug is not eenough not only to recharge but even to maintain the battery level. Yesterday i plugged it into my main desktop and this morning the battery was completely depleted.
The CPU also get really hot. I tried to slow the CPU down using Kernel adiutor from Fdroid repositories switching off 2 cores slowing it down in the range 300-1500 MHz and using power saving CPUgovernor. Of course those are not solutions. Luckily Iām at home healing a sprained ankle so I have plenty of time to help sorting out this issue.
Thanks in advance for your time 
See the #batteryguide for some general tips.
Heat usually speaks for faulty cards. Take out the SD/SIM-card(s) and see if charging works better then.
I tried removing OpenGApps and it helped.
I thought everything returned normal, yet I still see an abnormal āMiscellaneousā power usage, even after removing MicroSD as paulakreuzer suggested.
I just canāt remove the SIM card as I need to actually use the phone. Iāll move it into the other socket to check if it improves the issue.
