Iphone 4 sound and playback issues?

I recently purchased a factory refurbished Iphone 4. Right away I noticed while face-timing that the other person couldn't hear me and instead got a static sound. I then … Show more

You can try holding the home button and power button at the same time for 6 seconds and it should reboot. If this doesn't work, you can always restore the phone which usually fixes all problems. If this fails, then you probably have an issue with the hardware so just connect it to your computer, make an itunes account, take it back to apple and get a refund as all apple devices come with a 12 month warranty. This happened to my iphone 4 and couldn't do anything about it as my warranty expired

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