I use e/OS 3.4-a15 on FP 6. While the battery initially lasted for two days (from 80% to 20%), for several weeks now I have noticed battery usage that causes the battery to drop from 80% to 20% in only about 24 hours, which means that battery usage has apparently doubled. I noticed an initial change in battery consumption with the December update, and another when I switched to a new mobile phone contract with 5G and e-SIM (previously SIM with only 4G). I have already disabled 5G and âAutomatically select networkâ in the network settings, as some users who have also noticed battery consumption have recommended this. I also use the âApp Loungeâ very sparingly, launching it to check for updates and then closing the process and deleting the user data, as this also saves battery charge. This has helped to prevent even greater battery consumption, but I still wonder what is causing the battery consumption to double compared to November 2025.
I would really appreciate any tips on how I can get to the bottom of this.
Check with Settings > Battery > Battery usage > view by system. Now compare with View by apps. Do these figures look representative of your use?
Here is an image of my view by system for a random recent period. If any system components or apps seem to consume an unnaturally high proportion, I suggest clear the cache of this app.
Update and the SIM change could have left unhelpful residue in cache.
Thanks, I hadnât tried that yet. On my device, âMobile networkâ is listed first with 60% usage.
E: I have installed Cache cleaner, but I am not sure, which system apps I should choose for clearing cache. My first research did not deliver reliable results. Any suggestions?
Indicates some problem, like the phone is wasting a serious amount of power to connect. This may be an actual network problem rather than cache. A search may find forum posts covering similar.
To help learn the extent of cache problems ⌠say your 60% is seen in âSystem viewâ now change to âApps viewâ ⌠which apps show at the top? Clear cache of those apps. (It is a judgement whether cache is involved or not.)
Using CacheCleaner really âClear allâ is fine.
(To learn how each cache behaves study of the system apps can be somewhat useful. My default CacheCleaner lists apps by size of cache. So Select top 6 apps and clear, Select next 6 apps and clear. Perhaps bear in mind that size is not the main thing. A browser will collect a large useful cache quite quickly.)
During further research yesterday, I came across a thread in the Graphene/OS-Community. Several people there had the same problem with different devices, but especially with Google Pixels. They also recommended disabling 5G/automatic network selection, which I have already done. A moderator suspected that it might be a problem with a specific app/OS combination and mentioned something about Signalâs WebSocket push draining the battery. But in my battery statistics, it seems that Vivaldi consumes the most battery power (which seems quite reliable, at least in comparison to other apps, as I use it most often compared to others). What also bothers me is that my battery statistics seem to be quite inaccurate. They are not reset when I have fully charged my device.
Deactivated âMobile data always activeâ in the developer options.
Deactivated âSelect network automaticallyâ
Disabled âMobile dataâ for Vivaldi
And today I installed version 3.5-a15 of e/OS
In addition to disabling âMobile data always onâ, it seems to be most helpful to use a Wi-Fi connection. When I get the chance, I will disable âMobile dataâ for all apps and try to find out if it is caused by an app.
If anyone else has any tips, please feel free to share them.
