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Why didn't my Bookmarks and History Sync?

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All of my data won't sync to my device after I cleaned my Firefox data on my smart phone. I thought it just synced automatically but it's not working, what gives? Or does it only sync with Data from another device? I thought Firefox accounts backed it up for you?

All of my data won't sync to my device after I cleaned my Firefox data on my smart phone. I thought it just synced automatically but it's not working, what gives? Or does it only sync with Data from another device? I thought Firefox accounts backed it up for you?

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Hi

Thank you for your question about the Firefox Sync service.

It appears from your question, that you are using Firefox Sync as a back up service. This is not what Sync is designed to do. The Firefox Sync service takes a copy of the data you wish to include and transfers it to a second device (typically a mobile device such as a tablet or a telephone) running a copy of Firefox. The storage in between all attached devices is both temporary and fragile and is not stable enough to be (and is not designed as) a reliable backup service.