[SOLVED] If the sound isn't clear when making or receiving calls on Realme devices

1.Check your location and try in other places. When locating in signal dead zones, you might hear noises during phone calls. Consult with your network operator for the network issues.

2. If the voice sounds normal when on speaker, check your receiver instead. If you still can't hear clearly, then your phone system or network operator could be the issue.

3.The receiver won't work properly if it's blocked or dirty. Clean the receiver with a clean and soft-bristled brush or cotton bud.

4.Remove the phone case or screen protector that might block the receiver, then test again.

5.Check the connected accessories, and try the headset on other phones and see if it works properly. 

6.Restart the phone and update the ColorOS version.

7.If you cannot hear a specific person’s voice clearly, it might be his/her phone’s issue.

Source: Realme