Every now and then (say 1-2 times per day) my phone asks me to open a webpage while I'm using it. It doesn't happen in the browser, it happens from any app. I don't have any default browser set up, so I get the "open with..." dialog box. I tried to open some of them with Opera Mini (which somehow is less prone to hacks I guess) and every time the url (even the domain) is very different.
How can I understand which app (if any app is to be blamed) is causing this? What else can I do?
One example url: us.unidingcom.com/spac/redirect.html?model= (etc etc). Others were totally different.