IPhone 4 Call Problem

haseebbutt10

Distinguished
Apr 13, 2010
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Other people cant hear me either I call them or they call me.
But when, during call, I hold the phone, pressing from both sides (back side and front side) at almost center of phone, they can hear me...
Can you tell me where is the problem?
Thanks!
 
Actually I don't think it's the problem with the antenna.
It could be the problem with proximity sensor in which when the OP calls someone, the screen automatically lights up during a call and therefore,hiss/her face touches the screen(probably the mute button) and as a result the person on the line can't hear him/her.
Update your OS to the latest version and see if it helps.(It helped me a lot because I had a problem with the proximity sensor),if it didn't work then bring it to an apple store.