iPhone 3GS fault after battery replacement(no sound)

[Smudge1967]

I recently replaced the battery on my sons 3GS . Seemed fairly easy until I Tried to test it. There was no sound and the mic does not work either . Can any one help me?

 

[PNutts]

I'd just take it apart again and check all the connections.

 

[Smudge1967]

Tried that few times. Thanks

 

[Beyinsis]

I'm graduaded computer programming and assemblyied at least 200 pc when I was working for my own firm when was noname pc's very popular but I can't dare open an iphone