I'm not positive if there is a thread on this because i didn't have time to search since i'm studying for a final but yesterday afternoon i cracked the glass on my 3gs from a more minor fall than what its usually dropped from if it falls out of my hand. Needless to say, after a whole day i lost the ability to get 3g in places i know i always get 3g in. This isnt the first time i've noticed this though. My brother had a 3g and he cracked the glass on two separate iPhones (yeah he doesnt have good luck) but the exact same thing happened to him. All three phones have cracks on the glass in different spots, but they all lost the ability to detect 3g signal. I think it is, but is there a distinct possibility that cracked glass causes the device to lose the ability to find 3g? I know the crack isnt bad but i uploaded a picture for you to see, as you can tell its the top right hand corner of the glass. I was so mad when it happened because usually the phone is perfectly fine, but the one day i dont worry it had to happen.