lg chocolate evdo

i just purchased the lg chocolate cell phone. the only real complaint that i have with the phone is the battery size. i have an extended battery on order but while i was in the verizon store the service tech. told me that there was a way to turn off the evdo to save battery power. i do not live in an area that has evdo. if anyone knows how to turn it off please let me know. thank you very much. kevin

1. from the home screen menu+0
2. Type is 000000
3. Select "Network Select"
4. Select "Mode Preference"
5. Switch to 1x only
6. Press end (phone may power cycle)