When on a call, can’t hear other person

Hi there, kaaz,

We see you are having trouble hearing on calls through the iPhone receiver. The steps below are from the Apple Support article If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker - Apple Support, which has been designed to directly address issues like this. Please follow the steps in order, testing between each:

1. Check your sound settings

If your device has a Ring/Silent switch, move the switch forward—toward the device's display—so that orange isn't showing. If you're using an iPad, you can also swipe down from the top-right corner to view Control Center and make sure that Silent Mode is off. 

Open Settings > Focus > Do Not Disturb and make sure that Do Not Disturb is off.

2. Clean your receivers and speakersz

Remove all screen protectors, films, or cases from your device. Check the speaker opening to see if it's blocked or dirty. On iPhone only, make sure that the receiver is not blocked or dirty. If necessary, clean the speaker or receiver opening with a small, soft-bristled brush. Make sure that the brush is clean and dry.

3. Check the sound on your device

Go to Settings > Sounds (or Settings > Sounds & Haptics), and drag the Ringer and Alerts slider back and forth a few times. If you don't hear any sound, or if your speaker button on the Ringer and Alerts slider is dimmed, your speaker might need service. Contact Apple Support for iPhone, iPad, or iPod touch.

4. Try making a call

If you hear sound, try making a call with your iPhone and turn on speakerphone. On iPad or iPod touch, make a FaceTime call. If you still can't hear, or hear static or crackling, then your network or reception could be the issue. Try to call again later, or from a different location.

FaceTime isn't available in all countries or regions.

If the issue continues after that, please get in touch with Apple Support directly. You can do that here: Get Support.

Have a lovely day!