Iphone 3G 16GB sound and vibration problem
I'm having a problem with my Iphone 3G 16GB which is :
suddenly , there is no sound coming , even when answering incoming calls , Nobody can hear me and me as well I can't hear them , and when trying to play songs , No sound comes from the speaker but if I plugged the earphone , it works.
So I sent it to a repair shop , and they replaced the board of the speaker and MIC but still NO sound ?????????
and another problem came up , that it vibrates (sound on/off) randomly even if I shaked it or flip it !!!!!!!!!!!!