Chosen Solution
I took apart my iPhone 3G and after putting it back together the screen assembly is uneven and will not snap in properly. The bottom right part of the screen is raised up and decreases in height (closer to being snapped in) towards the top. i can push down on it and it kind of bounces back to its ‘uneven’ position. if i push down the “plasma” in the screen gets distorted or white, like when you push on a computer screen. when removing the front assembly the logic board seems to be tilted to the right a little bit. all the screws are screwed in, i dont understand why its not snapped in. it doesnt seem like anything is in the way of it. any ideas? EDIT: i figured it out, explanation too lengthy to type now. if anyone has same problem let me know and i would be glad to help.
you need to remove the motherboard and replace SIM end in first-the motherboard sits just under the lip of the SIM opening. it’s a bit tricky and you may have to try a few times. it may be that you are caught up on the edge of the camera housing.