Personally, I haven't had very good experiences with this Xaomi stick. You quickly get stuck in a hotel if you have to enter a code for wi-fi on the browser. For the same price, I'd rather use the Android box, which is much more flexible and allows you to add a VPN and lots of other applications.

If the app is already installed and you are using a VPN with a set location in Switzerland, for example, you are guaranteed to be able to use it. You would probably have to ask Swisscom whether it works without a VPN.