Hi, no one can see your personal browsing activity through Firefox itself — your history and actions are private on your device unless you’ve enabled sync or are signed in with a Firefox Account. If your phone isn’t behaving normally while browsing, please try the following steps: 1. Clear Firefox’s cache and cookies (Settings ▸ Delete browsing data). 2. Check if the same issue happens in Private mode. 3. Disable any add-ons or extensions you may have installed. 4. Restart your phone and test again. If you’re still having trouble, please describe exactly what’s not working — for example, if pages freeze, buttons don’t respond, or if you see any warning messages. That will help figure out whether it’s a browser issue or a system problem. Hope this helps! Sebastian