--janak[/quote]
i have the 750v and with 3G/UMTS, i'll drain my battery faster if i leave it on 3G the whole day. i usually leave it on GSM/Edge unless there's a reason to use 3G. i believe that high-speed=faster battery drain on any 3G device. i had the same behavior when i was using the Tytn.
now my spouse wants to return her BlackJack because of battery life. even with the registry tweak, she's getting only 24 hrs use... granted she's on the phone 2+ hours a day and she receives 75-100 emails a day. (i'm going to take a beating for convincing her to get this phone!

)[/quote]
What registry tweak are you talking about?