can i use a (at&t) samsung eternity on t-mobile?

[BRITTATTACKKK™]

i currently have t-mobile as my cellphone provider, but i want to get a samsung eternity. my friend has an at&t phone that he uses with t-mobile, but he can't receive or send picture messages and a few other features.

is there a way i can get an eternity but be able to use it (and all the features) with t-mobile service? i know nothing about unlocking or anything, so please use detail. thank you.

[cflam]

you will need to find some one to unlock the phone
and i beleive that you will not be able to use the internet if you do this

[geeth]

Ya sure you can use samsung eternity mobile with t-mobile sim only after unlocking the phone from AT&T network lock .You can easily unlock the phone using sites like Mobile-Unlocker.com here they are rendering network unlock code for all mobile models at reliable cost .After unlocking the phone you can freely use it with any GSM sim ...