Hi Pxter,

I couldn't reproduce your issue in Firefox for iOS 39.0. Can you try to manually trigger the sync function on Firefox for iOS and Desktop and see if you can find iOS history in your desktop?

Thanks for replying,

No, I tried to manually trigger it didn't work.

The actual situation is:

Desktop1, Desktop2, iPhone visit different website, and all three devices manually trigger sync. wait 2 minutes Desktop1, Desktop2, iPhone all three devices manually trigger sync again. wait 2 minutes

Result on each device is Desktop1: Desktop1 and Desktop2 history Desktop2: Desktop1 and Desktop2 history iPhone: Desktop1 and Desktop2 and iPhone history

By the way, Desktop can see the iPhone's webpage right on the "open tabs", but it just won't go into the history. Edit: Another thing, iPhone is able to delete Desktop1's and Desktop2's history, it will affect all devices.

Edit2: I don't know why but now it works! All I did just keep spamming the Sync button.

Edit3: It broke again. I believe re-login on iPhone is what caused it, because it all worked just fine before I re-login.

I've tried many times and here's my conclusion: If I don't reinstall(to clear all data), keep too much old Firefox data on iOS, re-login will cause the problem I mentioned.

2 ways to fix: 1. Wait about 10 hours. It will fix itself, and act normal again. 2. Just remember to clear the data on iOS before login Sync.