Hi philo51, the Firefox Sync feature can sync bookmarks between a "desktop" installation of Firefox and a "mobile" installation of Firefox. The bookmarks will remain in those separate categories on the two devices, they won't be combined. Have you started off by creating a Firefox Account? More info in these articles: * [[How do I set up Sync on my computer?]] * [[Sync bookmarks, tabs, history and passwords on Android]] Can you get it working?