Hello, my smartphone always says 'low on memory storage'. When I check the settings I see Firefox is using more than 1.2 gigabyte of storage. I have less than 15 bookmarks and Firefox should delete history, cache and opened tabs when it closes. What is the content of the data ('données' in French) folder which is 1.2 GB ?. I don't dare to clean it because I guess it would clear me allu bookmarks and other settings, but my personal settings should not have a 1 GB size... How to free this space securely ? Thank you.