I got a question - willing to donate to the solution holder..
This was also asked here...

2G vs 3G (3.5g). Well, we all know that 3G/3.5G brings down the battery quite fast and, though the network selection applet is making good job on it I would ask/propose to the coding guys the following scenario (please, forgive for me not being to clear when speaking about this issues - not knowing much about it)

When we need a 3G/3.5G network connection (either on SIP calls, web browsing, attachment downloading/uploading, etc) the present 2G connection should "call" for the 3.5G and allow it to do the job. I believe it is common knowledge that the switch from 2G to 3G is quite fast in contrast to the vice-versa from 3.5G to 2G which it takes quite longer. Then, after the job is done, and the screen is black (standby) the network connection should revert to the 2G mode.
The network Dual mode is not working, as I monitored several times.

So, is this doable?