If the Internet does not work via Wi-Fi, although there is a connection via a cable, the settings in the router may have been lost. This could be due to a power surge, a software error, or a hardware failure.
and in general, recently I noticed that frequent failures began to occur with my android. Recently, call forwarding randomly started to turn on, and because of this, I missed some important calls without knowing. And only thanks to the guide stop redirects on android I was able to solve this problem. This article describes the steps to disable call forwarding