Suddenly cell phones and laptops no longer find networks?

ob
1

I have some network problems right now. I was still on the internet with my laptop and suddenly there was a disconnect with the WLAN. Now both smartphone (Android) and laptop (Windows 10) can no longer find any Wi-Fi networks, neither mine nor that of the neighbors. I don't know what to do, please help! Restart did nothing…

Br

Mhm we only think that there may be a malfunction in your router network, so your internet provider, but if you can no longer find the network of your router, I can only think of a jammer