Here is what I have found:
I do the the *#*#4636#*#* dial, go to phone info, hit menu, then select radio band, force close, change to CDMA auto (PRL), then hit home.
Now here is the problem. Hold down home for recent programs and go back into testing (I found doing the *#*#4636#*#* lags and kills my phone sometimes). Hit Menu, force close, and take a look at what the preferred network type is: GSM.
As a test to the “visual glitch” theory, I changed the type to GSM/CDMA auto, when I return to the test menu, GSM/CDMA auto stays. So this menu is showing what it is actualy set to.
Every time you go to menu and select radio, the force close shuts off the radio and the menu says GSM. Is there really a “visual glitch” or does the GSM show because of the procedure followed??
Also it is referring to the PRL, which is the roaming list provided by Sprint, which is not going to have any GSM listing anyway.
I am not an expert by any means but there is more to this mystery then everyone is lead to believe. Battery life is a big issue and I am unsure if the “solution” is actually helping people.