Firefox for Android Support Forum

Hello everyone.

I'm noticing an abnormal battery usage in my Samsung Galaxy S24 Ultra. Ive used other Chromium based browsers without issues. Sadly I'll have to stop using it.

I have noticed that for the past several months Firefox for Android begins draining my battery after being installed for around 2 weeks. I'm using a Google Pixel 7 (128GB) running Android 14 (AP1A.240405.002) in the UK.

At first, I thought this was being caused by an add-on, so I reinstalled without add-ons and slowly started enabling them day by day until I caught the culprit (which if I recall correctly was Dark Reader). However, even after I disabled the Dark Reader add-on the problem persisted, and no matter how many times I uninstalled and reinstalled the app, the background battery drain issues would eventually come back after ~2 weeks of being installed.

At present I have only three add-ons enabled in the browser: ClearURLs, Decentraleyes, and uBlock Origin. I have used these add-ons in the browser for years without any issues.

It's now got the point where I am so fed up with this issue and the need to constantly reinstall that I will be using a different browser for the time being until this is fixed. I really want to use Firefox as I use it on all my other devices, but this is too much of an issue for me to ignore.

I've included screenshots of my phone's battery consumption whilst I'm asleep, and whilst I'm watching Youtube on my TV over lunch. Both of these are times I'm not using Firefox.

Any help on this issue would be greatly appreciated.

Firefox 125.0 Beta 9. Why so much memory usage in background when Firefox is not open and in use? (See Screenshot). Never noticed this before on previous Beta versions. Otherwise this version works good and no crashes.

Dear team, 1) thanks for your work! 2) I can observe a quite important problem which could make me uninstall the app. Mozilla is now draining much power, even while not using it (e.g. at night where I can monitor the problem). I can observe that since I switched to a pixel 8 phone. (Which has itself a poor living battery). The phone can hardly survive a day and a night without being charged. And when charged on everything. It can loose up to 30% battery until the morning. Another phone could be 5%. What really strange is android show me that during that period of time Mozilla was responsible for 90% of this leakage. I had sync enabled.(Tabs, history and bookmarks) I removed it, but the leaked percentage of Mozilla at night stays around 70%.

Hello,

I'm facing a severe battery drain issue that occurs with all of the current Firefox versions for Android (Stable, Beta, Nightly). I have noticed that the problem mainly arises when I have played any type of video through the browser, such as a YouTube video or any auto-playing html video through a website. And I don't mean that the battery drain occurs WHILE I have the browser open, I mean in the background, after I have exited Firefox. I have also installed GSAM battery monitor with the necessary ADB battery stats permission given, and it seems that the "Video On" wakelock is always on with Firefox. It's like that the thread that plays the video has not stopped, even if I have force closed Firefox, and killed the video tab. For example, I'm attaching two screenshots from the battery monitor, where I have previously opened Firefox and played a video for like 15 seconds (see the "Audion On"), then immediately closed all the tabs and force closed the application. As you can see, the "Video On" has not stopped, like the "Audio On" wakelock, and continues to count (35 minutes). This may go on forever, such as if I leave the phone at night, I'll wake up the next day with Firefox video wakelock displaying something like 15 hours of playback (something that of course, is not true). The only way to stop the drain, is to restart the phone and not open Firefox.

Though, the issue may not even be related with video playback. I have read in the forums (like here: https://support.mozilla.org/en-US/questions/1432706) that other people are facing this issue as well, and worked around it by not using Firefox as the default browser. I have not tried it but, even if it works, this is not at all convenient. Other posts on reddit that verify the same issue I am having: https://www.reddit.com/r/pixel_phones/comments/18xh7w3/why_is_firefox_using_all_this_battery_i_havent/ https://www.reddit.com/r/zenfone/comments/18zlow0/since_android_14_video_seems_to_be_the_top/ https://www.reddit.com/r/firefox/comments/174d13d/firefox_excessive_battery_usage_on_android/

I do not wish to switch to chromium based browsers. Please take a look at the issue and let me know. Thanks a lot.

Firefox android RAM memory usage gets sometimes high. I have no addons and only view tabs. Max RAM usage rises to 2 GB and my phone freezes. Opera always runs smoothly with no problems.

I really like this app. I always use it on desktop also but after a few last updates I noticed that battery usage of this app increased a lot and the percentage is very high. 1 hour screen time on youtube was 4% battery usage but on the firefox side it was 17 min / 11% battery usage. If you fix this It will be perfect for me. Here are the screenshots with different days. And I'm using sync feature and ublock addon. I always close the opened apps and I use deep sleep feature on my samsung device. And I forced to close the app. For now I stop using firefox for test purposes.

hi team, i think there is something wrong with firefox's battery utilisation. as shown in my screenshots above, i dont use browser much day to day but the battery usage is ridiculous compared to youtube etc.

1. i started noticing huge battery consumption on 29th jan when i decided to check my battery utilisation just for fun. realised it has been happening all the time. 2. i then put firefox into deep sleep when not in use to restrict background usage on 30th jan thinking it will help. 3. woke up on 31st jan (today) with firefox still running in the background when im asleep despite putting it into deep sleep and now having to force stop whenever i use firefox (which is not sustainable)

please advice/fix this issue if possible. for context, im using the s24 ultra.

Firefox has been an excellent browser on my new S22; however, I've observed a notable decline in my battery percentage lately. It seems to be dropping rapidly, and each time I check, it's lower. This is confirmed by the battery settings menu, which displays an unusually high amount of usage, even though I primarily use Firefox for general browsing and make sure to close background tabs. Has anyone else experienced a similar issue or found a solution in iphone? Any insights would be appreciated.

Firefox has been a great browser on my new S22 however I have noticed recently that it has been dropping my battery percentage extremely fast, and I notice its lower almost every minute I check. This is confirmed in the battery settings menu where it shows an abnormally high amount of usage, when I mainly use Firefox for general browsing and close background tabs.

duplicate of /questions/1438225 thread.

Firefox has been a great browser on my new S22 however I have noticed recently that it has been dropping my battery percentage extremely fast, and I notice its lower almost every minute I check. This is confirmed in the battery settings menu where it shows an abnormally high amount of usage, when I mainly use Firefox for general browsing and close background tabs.

Since updating to Android 14, I have had this issue twice now. I notice that my phone has way less battery than normal at the end of the day. When I check what has used all of the battery, I see that firefox has used over 10% with only like 3 minutes of screen on time. Reinstalling the app seems to fix it, but I don't want to keep reinstalling.

I have a strong phone sd 870 and 6gb ram so need to put the blame on that.. but this browser keeps refreshing the webpage as soon as I leave to other apps.. yes I tried with no battery restrictions but didn't solve the problem

Hello,

Firefox 120 is freezing my Android 11 phone when I start typing on the search bar (weirdly it start to happens when a space is inserted). It freezes so hard that pretty much it takes 30-min to 1 hour for the phone to restart or the battery to drain.

Reverting to 119.1.1 solves the problem immediately.

My guess would be that maybe the search bar or the suggestion related code introduced something weird, as I do have a lot of bookmarks. Nevertheless, it's definitely a new issue (been using Firefox mobile since first day around 2010) and introduced in 120.0.

Since the phone is hard freezing, I can't even connect in ADB and try to see any message hinting at what's wrong. If there's a crash trace maybe some info could be dug there.

Thanks in advance for the help!