I've been watching my D3 for about 8 hours now. All day it goes from 4 bars of 3G to 2 bars of 1x, without + or - a bar. Within seconds it fluctuates back and forth between exactly 4 (3G) bars and 2 (1x) bars. Not sure if anyone else is having this issue. It KILLS my battery, and doesn't ever stop. Ive updated roaming capabilities. Reset the phone. Reprogrammed it. Still doing it. Not sure why its doing this.