[bossb2525]

@DAD - I have an active AT&T SIM card. When I put it in the phone it still won't let me make calls. I thought after I SIM unlocked it and flashed the radio to detect AT&T's network that I would be able to use the phone. Unfortunately, it's a no go so far. Thanks for the suggestion though.

@tr0s - yeah the phone is SIM unlocked. I "donated" and got the SIM unlocker from htc-unlocks which flashed the hardSPL, flashed the radios, and SIM unlocked the phone. My phone recognizes my SIM as a GSM SIM and detects the AT&T network but something is keeping my phone from being able to make calls. That's why I'm thinking it needs to be activated first (still not sure). If I have an active AT&T SIM card, should it let me make calls although the phone did not go through Sprint activation? Also another poster said I need to select GSM mode and then select "gsm/umts services then band. tap get settings and select gsm(1900+850)+umts(1900+850)" Don't have my phone with me now so I will try this when I get home. Thanks for your help.