When at home, sometimes I notice that everything that is Internet related on the phone is slow.

I have a very fast Internet connection and a Wifi N network. I am connected to Wifi and still it is slow.

Checking the phone, however, also shows that I do not have 3G and only E or G. So I suspect that it uses the data connection instead of the Wifi connection (even though both are selected and the phone is to use Wifi as the preferred connection).

So, I proceed to Settings and disable Data. Sure enough.. Everything is fast again (still connected to the Wifi).

The phone choosing Data over Wifi seems to be a bug in WP7.5..??

This happens on both my HTC Titan and HTC Mozart.

Both run Mango and both are unlocked and unbranded.

Operator: Tele2 (Sweden)