earpiece is not giving any sound during calls in iphone 12 mini, any fix , pl suggest

Hey ktapan51,

It looks like you're coming from the article: If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker - Apple Support

"f you want to try more steps on your own

If you prefer, here are some more steps you can try on your own. After following these steps, you might still need to contact Apple Support to discuss service options.

1. Remove all screen protectors, films, or cases from your device. 
2. Check the speaker opening to see if it's blocked or dirty. On iPhone only, make sure that the receiver isn't blocked or dirty. 
3. If necessary, clean the speaker or receiver opening with a small, soft-bristled brush. Make sure that the brush is clean and dry.
4. 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.
5. 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."

Those would be the best steps to take to attempt to resolve the issue.

If that doesn't help, you may want to provide additional information about the situation.

If you record and playback a Voice Memo, are you able to hear it without issue? That would help narrow the issue down further. You can find steps for that here: Make a recording in Voice Memos on iPhone - Apple Support

Does this happen with all calls, or just calls with one specific contact? Do you have similar issues with FaceTime calls?

Thanks!