I have a Pixel 4 XL and today I noticed that every so often when I unlock my phone it will open to some scammy chrome tab. I use Firefox most of the time so I don’t know where this malware came from. I’ve tried deleting history/cookies and it hasn’t worked. I can’t delete chrome because you can’t do that on Pixel devices. Anybody have any advice other than doing a factory reset?
You can reset Chrome by deleting al app data and flushing cache. The app does not and cannot.get deleted from non root devices, but it will go back to its stock factory preloaded version. Then you can update it and you have a clean Chrome.
That said Chrome custom tabs can also be used by any application, so check what apps you have, and what apps open themselves frequently in background.