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I have 3 different version of Firefox on my smartphone , Help !

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I use Firefox (version 56.0) on my LG G6 smartphone . I recently downloaded the new "Beta Firefox" (version 57.0)" without deleting the first one. I do not want to lose data (bookmarks, searches, etc). Now I also downloaded"Firefox Focus" (version2.4). What should I do, how can I delete the old version while preserving the data that interest me? How I can optimize my device without loosing MB ? Thanks for your help.

I use Firefox (version 56.0) on my LG G6 smartphone . I recently downloaded the new "Beta Firefox" (version 57.0)" without deleting the first one. I do not want to lose data (bookmarks, searches, etc). Now I also downloaded"Firefox Focus" (version2.4). What should I do, how can I delete the old version while preserving the data that interest me? How I can optimize my device without loosing MB ? Thanks for your help.

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Firefox Focus is a lightweight privacy browser. It does not have bookmarks, history or a password manager.

If you need bookmarks, history or passwords then use Firefox or Firefox Beta. They are separate applications. You can safely uninstall whichever one you are not using..