Problem causes:
1. The other party's call is abnormal.
2. The communication network is unstable and there is interference in the environment.
3. The voice call app is abnormal.
4. The MIC hole or the receiver is blocked.
5. Call noise due to the use of abnormal earphones.
6. Caused by the metal phone case.
7. The system has not been upgraded to the latest version.
Solutions:
1. The other party's device will cause noise in the call. It is recommended that you change other people for calling to try.
2. Unstable network and environmental interference will cause noise in the call. It is recommended that you change other networks and locations to try.
3. The abnormal third-party apps will cause noise in the call. It is recommended that you use other methods such as phone call to try.
4. Please check whether there are foreign objects in the MIC hole or speaker or blocked by the phone case. If there is any, it is recommended to try to clean or remove the phone case and try again.
5. Please confirm whether the earphones are used during the voice call. If used, it is recommended that you remove the earphones and try to see if it is normal.
6. Please confirm whether the phone is wearing a metal protective case. Since the material of the metal protective case has certain shielding and anti-interference properties, it may cause noise when calling.
7. Please confirm whether the phone version is the latest version. If the phone version is the latest version, it is recommended that you restart the phone and try to call again.
If the above methods do not solve your problem, please back up your data and go to the nearest realme service center for testing.
