[Edwood]

Until HTC releases a firmware update that has a more efficient radio ROM, I found a better solution for improving battery life. It's a annoying to have to use it, but oh well.

For those that live on the fringes of EVDO reception or have poor / intermittent EVDO reception otherwise, it's best to disable EVDO altogether and go with 1xRTT only.

Here is the Registry edit for enabling Hidden Phone Settings "Mode of Operation" option to pick 1X mode only.

HKLM\SOFTWARE\OEM\PhoneSetting

Change the option HiddenModeOperationPage from 1 to 0

Then go to Phone/menu/option/service/and check in the list, "Mode of Operation" should be at the bottom. You have 3 choices, Hybrid, EVDO, and 1X.
Once you have checked the box and hit ok, you will need to soft reset, and then the phone should switch to 1x only. (Not sure if a soft reset is necessary, but it does survive a soft reset).

It's a bit of a hassle, but at least it's a Settings Menu option you can toggle back and forth between.

Until Sprint puts EVDO back on the tower nearest to me or puts out an Airave that supports EVDO, this 1X only setting is the best solution right now.

-Ed