Where Does the Mull Browser Store Profiles?
Mull browser keeps profile, extensions and history in private Android storage under its Fenix fork package.
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Mull ships on privacy ROMs as a hardened fork of Firefox Fenix, with its profile inside standard private storage under its own ID. No SD card copy carries history or extensions, and the suffix in the package string is what separates it from stock Firefox and Fennec builds in file managers and backup tools.
Bookmarks travel through Firefox Sync when signed in, or through the export entry in Settings where available. Raw copies of private folders need root and matching versions, and they can break profile locks when moved between installs. When the browser loops on launch after an update, clear its data from system settings and sign back in.
Where Mull stores this, by platform
/data/data/us.spotco.fennec_dos
Private profile for the verified Mull package. Sync bookmarks via Firefox Sync; raw copies need root and matching versions.
Frequently asked questions
How do I back up Mull bookmarks?
Use Settings, Export or a sync account where available. Raw /data/data copies need root and break profile locks. Bookmarks sync through Firefox Sync when signed in.
How is Mull different from Firefox packages?
Mull is us.spotco.fennec_dos, a hardened Fenix fork. Stock Firefox uses org.mozilla.firefox, Fennec uses org.mozilla.fennec_fdroid. The suffix matters when hunting profiles.
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