F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform. The client makes it easy to browse, install, and keep track of updates on your device.
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I don't use Fennec. But mull.
I hope you know about 'Clear Cache', and this issue is not that. If you haven't done that you can do a simple search to find steps.
If the clear cache did not solve the issue, the only way is backing up only relevant data. It looks like Fennec does support sync. In that case you can login using a mozilla account, and choose what to sync. Once all your stuff is synced with another device, its safe to do whatever you want.
Clear Cache did not help unfortunately. I also tried to clean cache within Fennec from the settings menue.
Regarding Mull. I am using Mull, too. Mull is "only" using 1.31 GB.
In settings there's a Delete browsing data option.
Select the things you want to clear and run it?
Also, do go to the app settings of firefox and see how the storage is being used. How much is the app data? How much is the cache?
In settings menu i already deleted:
App Info now gives me:
Aah. So clearing cache will not help.
Do you have a lot of bookmarks or open tabs or so?
In the Data collection settings, is studies turned on?
Have 0 bookmarks and 0 tabs open. I don't even use Fennec much. Only as second browser next to mull
I searched the settings but find nothing regarding studies.
Aah. Fdroid removes the portions of telemetry.
I use the regular Firefox fenix, so asked about that.
I don't think there are many other options.
There is a remote usb debugging option, but I don't have much info on that. Maybe that can help you troubleshoot?
Good idea regarding USB debugging. Never did this before. Probably need a quiet weekend to dig into this.
Do share your experience after you try it, either here or on the community for firefox.
Will probably help others having the issue too.
If you use a Firefox account, you should be able to sync your history and stored passwords.
I use Fennec from F-Droid as well.
Don't know why you have so much user data. Maybe one of your extensions?
Thanks for sharing. I deleted all Add-Ons but it only slightly decreased.
It's the extensions perhaps.
Interesting theory. I deleted all Add-Ons. App Size was reduzed from 14.81 GB to 14.77 GB.
Not sure if they can still store someting which was not deleted with removal.
Why do you need history? You could export your passwords and then delete storage.
History of used websites.
And it seems like Fennec does not even support export of passwords. I dont want to share them with Mozilla.. too afraid of a data leak