Is BT WiFi hot spot access for their broadband customers really unlimited?
Apparently not. BT restricts access to their Openzone and Fon WiFi network to 10,000 minutes per month (approximately 7 days) with warnings sent out when you reach 8,000. This is in spite of it being advertised as "unlimited".
Given that they supply an Android app which logs you in automatically it will not take long to get to 10,000 minutes, especially as the app makes it difficult to stop from connecting even when you are at home where you should be using your own wifi.