I live in Italy and I'd turn off internet edge.
Now, the parameters of edge are null, so when I connect iphone to internet (by wifi) I spend money (because iphone also connect to edge network)
So, if I write random parameters in edge configuration, my iphone doesn't connect to edge but only to wifi :-) and this is very well! ;-)
The problem is that when I reboot my iphone I lost edge parameters.
How can I resolve?