People can't hear me when they call
When someone calls me on my iPhone 6, they can't hear me unless I'm on speaker phone. Even when I'm on speaker, they say I sound far away. It doesn't seem like anything is stuck in the speaker.
Hi! Try to restart/reset your device. This won't delete your data stored on this device.
- Press and hold the Sleep/Wake button
- Press and hold on the Home button
- Keep holding both buttons until the display turns off and back on with Apple logo on it.
Alternatively, you may go to Settings - General - Reset - Reset All Settings
https://support.apple.com/en-us/HT201559
If this does not help, restore your device to factory settings. Note that this will erase the data from your device.
Take a look this Apple Support article: Use iTunes to restore your iPhone, iPad, or iPod to factory settings - Apple Support.