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Is there an app that will record HD video but sleep or dim the screen? The camera app that comes with the device chews through battery power like crazy.

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You can use backgrounder iPhone tweak if jailbroken that will run apps in background While iPhone seems to be shut down I use this when downloading long files I just turn on backgrounder to have app run in background and press button on top of iPhone so everthing is off but what your running in background

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