Looks like apple is kiding with us. Ive had this problem since Ios 6.1 and now after 3 days I ulgraded to 6.1.2 this ****** issue has returned. Again the other part will listen me if I scream HELLOOo in the first second and then everything works fine or if I wait 1 minute but none can wait that.
Im really angry with this company always they mess up after each update
I'm starting to think its not the update but maybe this is the issue - http://youtu.be/0jhWxYTVxe4
The phone has been bumped and dropped a couple of times, but nothing too serious (maybe?)
How to fix the iPhone 4 (4s) Mic problem
Uploaded on Feb 25, 2012
Is your iPhone 4 not working when you make or receive call? Does it the mic still work in other apps? Have you recently dropped it? Even if you haven't try this out. Super easy to do.
I have already done this procedure but didnt work!
Is your mic always mute in the calls or does It start to work when you approach mouth or scream? Because mine if the caller doesnt hear me if I begin to scream high It turns back to work. The fact is this problem was solved with 6.1.1 but seems It is returning. I have searched for other people who is facing it and seems It not just us.
Will wait the next update If doesnt solve will think if I will still stick with device or not.