Originally Posted by lacroixn
I read somewhere that 3g alone works fine, its when the phone (example the Bold ) is set to 3g/2g it causes a huge power drain.
To answer the OP's battery question my Bold, doing similar tasks (v188.8.131.52) and set to 3G/2G/WiFi, lasted about one third of the time of my 8310.
Very few locations have sufficiently dense 3G coverage to make it practical to turn off 2G. And it's the difficulty that all handset manufacturers and networks have in implementing seamless 3G/2G handover that causes lost calls and decreased battery life.
I don't know to what extent Jav's higher processor speed will in practice mean faster network performance - it certainly won't affect bandwidth - but even if Jav is slower than Bold, solid performance on GPRS/EDGE should make it a hit with RIM's core market.