A customer has a weird problem:
After he switches on his router/DSL-modem, his Android phone won't connect to WiFi. When he turns on his laptop (connected by LAN to the router), the phone suddenly is able to connect to WiFi.
When the laptop is subsequently turned off again, the phone stays connected to WiFi.
So, once the router is switched off and on again, WiFi only becomes available to the phone when the laptop is turned on (and then off).
Apparently this started to happen a week ago, without any changes in settings. I checked all his router settings remotely and all seems to be in order. He doesn't have TeamViewer on his phone, so I couldn't really check all its settings, but nothing is supposed to have changed.
Hence, all suggestions welcome.