20 - 30 minutos
The 3GS battery not lasting as long as it originally especially in standby mode.
The glass was smashed on another 3GS I have and I had it replaced by a onsite repair place. But it would lock up and I would have to close the application and put it on standby to fix it.
Repair went great. The only problem was a small part that held the camera in place that I wasn't sure were it went. I looked on the forums and found the solution. Battery took a few charges to start showing a correct charge percentage and now it seems to be working fine.
The glass was easy to install and so far with my tests the problem is gone.
More info on the little part that holds in the camera so someone wouldn't have to search for it.