iphone 6, people can't hear me

Hey ak03,

Thanks for the question. The following resource outlines troubleshooting steps for the symptom you are experiencing:

iPhone: Microphone issues

http://support.apple.com/kb/TS5183

Symptoms

You may experience one of these issues:

[…]

- Other people can't hear you, or have difficulty hearing you during a phone call or FaceTime call

- Other people complain that you sound unclear during a phone call or FaceTime call

Resolve the issue

Follow these steps, testing after each.

1. Make sure nothing is plugged in to the jack connector.
2. Make sure nothing is blocking any of the microphones (refer to the pictures below to find your device's microphones). Check for these:
   • Dirt or debris
   • A screen protector or case
   • When you're holding your phone next to your ear, make sure you don't block the microphone with your fingers or shoulder and make sure to speak into the microphone
3. Turn the iPhone off and then on.
4. Update to the latest version of iOS.
5. If necessary, find general iPhone hardware troubleshooting suggestions.
6. For further assistance, contact Apple Support.

Thanks,

Matt M.

I just bought Iphone 6 2 days back.. At first could hear. Later thought network problem. Now can't even hear through speaker. Totally deaf. Anyone got solution yet?

Try reset the network settings.

Settings>general>reset>reset network settings

A hard reset (Home + Power at the same time) will usually give you a fix, but my iPhone 6s Plus did not stay fixed. Apple replaced one phone, and now I'm having the same issue with the new phone.

Clean the little hole next to the headphone socket with a pin then with bluetac. Fixed mine, hope it does the same for you.