IPhone 4 won't play sound when charging?

The sound works just fine when it's not plugged in. I can play music, videos, i get text and call alerts etc. But none of this works when my phone is charging. Any advice/solutions?

Are you using the official Apple iPhone 30pin charger that you got with the phone, or one you purchased from a third party? Sometimes the chargers don't always work as expected, thats what you get for not shelling out like 30$ for an iPhone charger… Nuts really. Most of the new iPhones don't even work with third party chargers. Try that, if not you might need to get your dock connector replaced. Check iFixit's website for some DIY tutorials, I've purchased from them before and it arrived perfectly and my iPhone works well now, so they're reliable.

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