Have had my optimus now for quite a while and have rooted running cm7. My signal goes back and forth from 3g down to 2g randomly. I thought it was the tower at first but my wife s phone doesn't do this and she also has vm service in the same location. It's really making me mad i can't hardly use the service i pay for. So far I've tried different roms and switched my prl to no avail. At night it doesn't switch nearly as often but during the day it goes back and forth nearly every few seconds cutting out my data. Really could use some help in figuring this out, thank you.