Sidekick on AT&T

Okayy . So I want a Sidekick cell phone , At&t .
My cell phone now is only $20.00 & something , a month .
I have an At&t pay as you go thing ..
I go buy a minute card , for $20.00 ,
Then I change all the minutes intol ulimited texing .
I do that everymonth ..

& I was wondering if I got a sidekick ,
could I do the same with that ?
Pleaseee & Thanksss .

The Sidekick phones used on T-Mobile are locked to the Danger servers for data access. The Danger servers will only connect through T-Mobile. You will be limited to voice and SMS use.