Although there are many apps for turning the iPhone 4 flash light on, I recommend you an app that also makes the flash light blinks by the sounds that come through the mic.
This app is 'Dancing Flash Light for iPhone 4' and you can find it in the App Store. There is also a Lite version so you can try it.
This app is 'Dancing Flash Light for iPhone 4' and you can find it in the App Store. There is also a Lite version so you can try it.
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