Default Lost evdo on samsung moment

First off i like to say hi new user. I have a samsung moment and i have lost connection to the evdo i have called sprint on the issue and they have not resolved it for me i added a custom rom to see if it fix the problem i'm running ultimate dream 3.2 i still have no connection anybody know how to fix the problem or a custom rom that will fix the problem.


Samsung Moment SPH-M900