ebay://, tel: etc not working out of browser I'm using Opera as browser. I can remember that in the past, when I googled a restaurant, I could dial the phone number right from the search results.

Now, I see in the title bar tel:&lt;number&gt;, but the dialer doesn't open.

In addition, I just noticed that an ebay:// link does also not open the Ebay app but does nothing.

Any idea what I have configured for achieving this behavior? And even more interesting: how can I restore the original behavior?
When weird stuff starts to happen, I suggest to uninstall Opera, reboot your device, and reinstall Opera.  

First, check the version of Opera that you have installed, in case you want to reinstall that version, rather than the latest.  You can alway find the older version on a mirror like apkmirror.com.