IPhone 4 will not charge via wall charger

10-11  Source: Network gathering  Views:4 

All of a sudden about 2 week ago my wall charger stopped charging my phone. I tried a hard reboot and it didn't work. Bought a replacement cord and wall jack and still doesn't work. Tested wall charger and cord on friends' phones and works correctly. Does anyone have a legitimate fix for this? Seems to be a provlem with the phone itself, rather than the cord or wall charger, as the cord an wall adapter work with other iPhone 4's, my phone will charge via the comp or via the car jack I have too.
Thanks in advance for any help.
Do you have a 4 or a 4S? 
I would take it to an Apple Store. This is not an issue I can really troubleshoot over the internet.
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