focus-android Focus drains phone battery

This bug is to investigate further reports from users that when Focus is in the background, the app uses a lot of battery.

See #5269, #4684

Sep 30 '21 21:09 amedyne

I have been keeping tabs opened on some devices even overnight, with no notification from OS related to battery drain from Focus. Also, battery levels do not drop. Tested on Android 9 and 10.

Oct 08 '21 15:10 mcarare

Triage: this doesn't contain actionable info so it seems to be a tracking issue for the focus team. We'll put in the "Triaged" column and can move it to a P1 if we get more actionable information.

Oct 27 '21 21:10 mcomella

I don't have any additional information. Just want to inform you that I noticed a huge battery drain tonight. Some days ago I bought a new phone and (like on the previous one) installed Firefox Focus (the latest version from Google Play). The phone is a new "Samsung Galaxy S21 FE" (debloated) with Android 12 and One UI 4. I was really surprised this morning when I saw a big fall in the battery capacity. I checked which app drinks so much juice while the phone was in Airplane mode overnight. It was a Firefox focus. I don't know how, I had just installed it and checked if it works. Then it went to the background. Now I will be more careful about it.

Apr 11 '22 03:04 kacnje

I will monitor my current device(Pixel 3a Android 11) for a few days with https://developer.android.com/topic/performance/power/setup-battery-historian, to see if I catch something

Apr 13 '22 11:04 ionutbedregeanu

Tnx. Maybe you will find something. My "investigation": I noticed that Focus had a high battery drain while I had a shortcut to URL from Focus on Android's home screen. Yesterday I remove the shortcut and it looks that now everything is ok. It is interesting because the shortcut shows to my website which doesn't refresh by itself. Can shortcut (even if I didn't use it) be the reason for high battery consumption?

Apr 14 '22 03:04 kacnje

After some tests I didn't find anything weird, but I will let this ticket open to keep an eye on it I also took a look on Network informations, Process info, Scheduled jobs, Services and I didn't notice something wrong

Day 1

First I tested with the debug version of Focus, I just let it open over night

Day 2

Debug version of Focus, open over night with an wikipedia shortcut and airplane mode on

App Stats Day 2

Day 3

Release version of Focus, open over night with an wikipedia shortcut and airplane mode on

App Stats Day 3

Apr 19 '22 14:04 ionutbedregeanu

After a few days, I can confirm that there is no Focus battery drain anymore while I remove a shortcut. A shortcut points to my weather station page: https://izo.amebis.si/belchertown Maybe you can create a shortcut to it for a test. I attacheched a screenshot I made when I noticed the problem. Commendation to your job. Screenshot_20220412-033903_Device care