I had a couple of question regarding unlocking a Samsung phone that I'd like
to buy through Cingular for use with my T-Mobile plan.

1) How would I go about doing it? Is it as simple as entering a code into my
phone for it or do I actually have to go into the phone and do something?

2) Is it a situation where Cingular or T-Mobile can find out and send a code
that will lock it on me again even after I unlock it?

The reason I would like to do this is because T-Mobile's phone selection
flat-out sucks. There is very little selection compared to most of the other
cell-plan providers. I've waited several months to see if it would change
but believe it or not, T-Mobile's phone selection is smaller than ever now.

Thank you for any help.