Data plan "unlimited internet for phones" dead on iPhone

Yesterday I lost my data plan from T-Mobile.
I read about people successfully using iPhone with $10 "unlimited internet for phones" which used to be t-zones. So I finally decided to try to enable data plan "unlimited internet for phones" and O! miracle, it worked with iPhone. While I wasn't sure about benefits of having EDGE slooooooow internet on the phone but it worked OK for emails, checking weather while waiting for green light on stoplight, I even checked couple web pages while waiting. I was trying to justify the cost of $10 a month because I have internet at work, I have wifi at home and my in-laws friendly neighborhood, so there it was - it's just 30 cents per day for ability to go online anywhere... But I kept thinking how long it will take for T-Mobile to figure out iPhone users and close this hole. So it happened; yesterday I wasn't able to access web to check e-mail, wheather. First I decided that it was outage due wheather (we had storm in area), but then I tried to open Safari and got message:

It was very good enough reason to login to my account and cancel data plan.
So T-Mobile lost $120 a year extra I would pay them for service I barely used.

you can see the message offering to buy $60 webConnect data plan here:
http://wipcore.t-mobile.com/webconnect.html

iPhone lack of hardware keys unexpected benefit

Here is totally unexpected benefit of iPhone lack of harware keys for Send/Recieve Call: my 19 month old daughter can talk on the phone to her Grandparents without disconnecting a call! You know kids LOVE to press buttons on the phone and with any other phone it will result in call being put on hold or disconnected. With iPhone's only button kid doesn't disconnect call, just minimizes call and goes to Home screen!
Now I am looking at phones from this angle too- how child friendly the phone is.