オリジナル投稿者： Kimmo Salmelainen ,
Did this help? Is it working now? I have this same problem after changing display to iPhone 4. Everything else works, even Skype with internal speaker and external speaker, but phone calls does not work at all, in any direction. Connection is made and signal is strong, but no sound in either way. No improvement for me in tightening EMI shield - have to check logic board contacts next.