Sprint Phone--->tmobile internet and ATT also??

[1999TL]

First of all, i Just searched. Couldn't find what I was looking for.

I saw references to a Tmobile cab for internet settings? I'm trying to get my Sprint Phone to be able to use Tmobile internet. I Tried using a tmobile sim card already to test if the unlock worked...and it did....I just didn't spend the time to try to figure out how to get the internet working.

Thanks.