people cant hear me on iphone 5s

It may be you have a defective phone, I'd say bring back to Apple and let them have a looksie.

nasir.666 said:

many people are saying they cant hear my voice when im talking with them on iphone 5s. i have already tried reset and other methods but problem still remains.please help

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This sounds like a problem that has been around since the iPhone 4 days (as far as I can tell). Check these discussions:

Apple forums iPhone
iFixit forums iPhone 4 problem
MacRumors iPhone problem
O2 iPhone 5s problem

I actually had this problem with the launch iPhone 4 on AT&T that I use to have before I sold it. The general consensus for the solution is to swap it out at the Apple Store, especially while it is still covered under warranty. I believe with the iPhone 4, one of the potential causes for the problem is that an IC involved with the noise cancellation is knocked loose from the flex cable, which explains why the voice recording and FaceTime still work properly, but calls do not.

Summary; schedule an appointment with your Genius and get that phone swapped out!

Go to an apple store to get it swapped

nasir.666 said:

i dont have apple warranty

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There's a standard one year warranty on all devices.

Can they hear you at all?

If so, maybe there is lint in the microphone holes. Mine were clogged up from always being in my pants. The lightning connector was packed full too, so now the cable always has a solid connection.

I used some very fine tip tweezers to clean the phone.

with the noise cancellation i find that if i do not talk directly into the mic with it properly resting on my ear/cheek, i come in very muffled to who ever i am speaking to.

luckydcxx said:

with the noise cancellation i find that if i do not talk directly into the mic with it properly resting on my ear/cheek, i come in very muffled to who ever i am speaking to.

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That is not normal. I can set my phone down on my desk and hold a perfectly normal conversation with the speaker turned on. That is not how noise cancellation works.

Newtons Apple said:

That is not normal. I can set my phone down on my desk and hold a perfectly normal conversation with the speaker turned on. That is not how noise cancellation works.

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my speaker actually works great ... most of the time people don't even know they are on speaker phone.

Did you turn off the sound and you were not aware ?

Are you using a waterproof case?

luckydcxx said:

my speaker actually works great ... most of the time people don't even know they are on speaker phone.

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The speaker has nothing to do with the microphone. The same microphone is used no matter if on speaker phone or not.