I use Skype to make some international calls. This works well if I am at home/office and connected to Wi-Fi.
However if I am on move, I prefer to turn off Wi-Fi to prevent connection to public Wi-Fi networks so that it won't affect my ongoing calls.
Sometimes after calls I forget to turn on Wi-Fi and start using some other app which can consume substantial amount of data.
Is there is any way to disconnect Wi-Fi for just a few minutes (the estimated duration of the call)? Or to force app calling features to use cellular only?