Microphone - Earpiece Not Working DURING GSM CALLS ONLY

I have Iphone 4 and now is update to 7.0.3.

The problem is:

Microphone - Earpiece - Speaker and Headphones (plus mic) Not Working DURING GSM CALLS ONLY.

Microphone - Earpiece - Speaker and Headphones (plus mic) Work perfectly:

a) Using recording or acoustic apps (voice memos or Music)

b) Make calls via data apps like: Viber or Skype.

I Think is not a software problem, I have this problem before last update (6.++)

I Think is not a carrier problem,I tried more than 2.

During the call if it is pressed any number key in the device, the sound is heard in another device and vice versa. Only the voice is not transmitted from any direction.

Thanks in advance

iPhone 4, iOS 7.0.3

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1 Comment:

i have same problem i update my phon but stell same problem any one have good salution let me know plz

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