Firefox ar Android Community Forum

I'm giving my old Galaxy S7 to a friend, I've got her a prepaid SIM and put it into the S7 (my own SIM has gone into a new S22). I've managed to set up the S7 to sync with her data via DAVx5, Thunderbird was easy to set up thanks to the QR-Code export, and various other things worked as expected.

BUT she uses firefox sync, and so do I. I deinstalled firefox on the S7, and reinstalled it, and changed to her sync account - but all my own personal data (bookmarks, chronology etc) are still there. That's not only really annoying, but also a breach of my private sphere.

Google KI tells me to give her sync account a new password, before doing that decoupling from sync on all used devices; we have five, so that would be a real pain. The only other option I see is a factory reset and then repeat all the work setting up the S7.

So what I'm asking for is an option when firefox is deinstalled, or as an extra option in the settings, to delete all stored personal data.

I’m using Firefox on an Android tablet in PC mode, paired with a keyboard and mouse. To enhance the desktop experience, I’ve switched the tab view from grid to list. However, I can’t enable full-screen mode for the entire app, something I can do on Firefox Desktop. On YouTube, videos automatically switch to full screen when I enter full-screen mode, but this feature seems missing for the browser itself. Maybe the full-screen option isn’t available in the settings.

When I try to play whatever video on X in Firefox Nightly mobile, it just shows sequences of solid colors. Audio is still normal.

The issue happens for both GIFs and Videos This only happens in Firefox Nightly. In Firefox, the videos can be seen just fine.

Bonjour, j'ai suivi la procédure pour synchroniser mon firefox sur pc et mon firefox sur mon android, pour avoir mes marques pages sur mon android. Je suis bien connectée à mon compte modzilla sur mon pc et mon android. Sur mon pc, j'ai bien récupéré les marques pages de mon android. Par contre sur mon android, je n'ai pas récupéré les marques pages de mon pc... Pouvez vous m'aider s'il-vous-plaît ? Merci

Hi there,

Firefox desktop and Fennec Android are syncing everything perfectly, including tabs from Fennec in Firefeox, except for when I try to view tabs from Firefox in Fennec I get the message: "You don't have any tabs open in Fennec on your other devices".

I have tried to figure out what's causing this and have searched for answers but I can't figure it out. Could anyone suggest what the problem might be please. Appologoes if this is something obvious I've just missed.

Many thanks,

I dont know if it's an issue with a recent update but everytime I open Firefox I get a popup asking me "What do you think about Firefox?"

It consistently happens when I close the app, open it again, and attempt to create a new tab.

Unlike other apps firefox does not stay on. I make notes from websites and firefox is virtually useless on my android tablet.there is no good solution for this other than to set my screen time out to never and changing it back afterwards as it affects other apps also. Extension like caffine does not work on android.

When I click on YouTube comments to read them Firefox mobile pops up a blank window. Works fine if I switch to desktop mode. Android Version 16. Tried reinstalling Firefox. Cleared cache and cookies. Nothing so far has worked.

I have tried logging out and logging back in on my android firefox. accounts.firefox.com shows it is logged in, yet I do not see my firefox on android listed in my "Tabs from other devices"/"Synced tabs", in fact, I do not see any other device tabs listed. On my android firefox, it shows that I am logged in, yet the checkmarks for choosing what I want to sync are all disabled, the sync now button can be clicked but does nothing. I have tried logging out, forced stopping firefox app, and restarting android, nothing worked.

I get this message when I email to people on Yahoo, comast.net and others. MAILER-DAEMON <postmaster@earthlink-vadesecure.net> yesterday

Delivery has failed to these recipients or distribution lists: Server "96.103.145.162:25" returned an error: * [sasanmcamp@comcast.net]: 550 5.1.1 Not our Customer Original message details: * Received on: Thu, 20 Nov 2025 01:15:48 +0000 * From: Gloria Kahn <gloriakahn@pobox.com> * To: eeva…

Hello, I have a reproducible issue on Firefox Beta for Android on my POCO X6 Pro 5G running HyperOS / Android 15.

When tapping mailto: or tel: links in Firefox, nothing happens. No app opens and no chooser dialog is shown.

The same links work correctly in Google Chrome, so the Phone/Dialer and Email apps are properly registered with the system.

This appears to be related to Bug 1988946, but it also affects Android 15 on HyperOS.

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Steps to reproduce

1. Open Firefox Beta on a POCO/Xiaomi device running HyperOS.

2. Visit any webpage containing a tel: or mailto: link.

3. Tap the link.

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Actual Result

No action is triggered.

No Intent Resolver popup appears.

No dialer or email app is launched.

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Expected Result

tel: links should open the default Phone app.

mailto: links should open the user’s email app.

If multiple apps are available, Android should show a chooser dialog.

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Device Information

Device: POCO X6 Pro 5G

OS: HyperOS, Android 15

Firefox version: Firefox Beta 146.0b4

Build: #2016126791

GV: 146.0-20251117130030

AS: 146.0.1

Build date: 2025-11-17T13:00:30

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What I have already tried

Enabled “Open links in apps” in Firefox

Reset Firefox default preferences

Reset Phone (Dialer) defaults

Granted all special permissions (background activity, pop-ups, etc.)

Tested Firefox Stable and Beta

Cleared app cache/data

Rebooted device

Verified that Chrome opens tel: and mailto: links correctly on the same device

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Additional notes

In HyperOS settings (“Opening links”), Firefox does not receive supported link types.

The Phone app does not appear in “Opening links”, but it works fine with Chrome.

This suggests a compatibility issue between Firefox’s intent handling and Xiaomi/POCO HyperOS on Android 15.

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Conclusion

This issue is reproducible 100% of the time and affects basic link handling functionality. I am available to provide logs or run additional tests if needed.

Thank you!

Firefox updated on my Samsung Galaxy A11 this morning and now it crashes every time I try to open a web page. I have tried deleting/clearing the cache, but this didn't make any difference. It sends a crash report. Latest Sirocco link is crash-stats.mozilla.org/report/index/c23c689c-0beb-4a82-873e-0fd850251120

No doubt this has been asked before but I haven't found an answer, apologies! Just got a new phone. I have well over 100 tabs open on Firefox on my old phone and want to move them over to the new one if that's possible. The phones are synced but alas that doesn't do it. Is there a way to transfer all those tabs over to the new phone without copying every single Web address the hard way?