Running IPhone apps while in sleep mode
iphone
Solution
I found a great webpage that explains how to do it -
Cached link from Wayback machine
Original Link, now 404
You have to start a timer that plays a sound every 10 seconds. But the sound can be silent.
Problem
As of IPhone OS 3.0, MotionX GPS is able to keep recording a GPS track while in sleep mode. After you push the sleep button on top of the phone, the app continues receiving GPS coordinates and recording them. Does anyone know how they're able to do this? I'm only aware of the method to keep running audio while in sleep mode.