1 - 2 uren
I'm the problem. I went into my phone to just get some crud out from in between the camera and the glass cover. My tear-down really tore it up!
While I was inside I detached the lower interconnect cable from its connector and managed to crack the dock-connector ribbon-cable headers while trying to put it back on.
The repair was actually very easy. I've been doing all of my tearing down without taking out the battery, so that has saved some time. It took about an hour, start to finish, which includes assembling tools from across the house, cleaning off the table, tearing down and up, testing the device (speaker, headphones with volume control and pause/play, mic, dock connector for charging and syncing, and home button), and cleaning up my workspace.
I did think that this time I'd need to take the battery out to spudge the old dock connector off of the back of the device, but then the pull tab snapped off and I was not interesting in prying the battery and risking a thermal event. Skipping it worked just fine!
Also, the most important thing is to remain calm and be diligent and patient. The rushing to put it back together the first time and see if I fixed the camera crud is how I broke it in the first place!
Unfortunately, the camera crud wasn't between the lens and the glass cover as it's still in every picture. But at least I know that I can fix my own phone, now!