Why do landline calls have noise? Why is there a murmur on a mobile phone call?

Hello, there is a noise in the fixed ** as follows:

1. Cause of failure: It may be caused by problems such as user lines, switches or phones.

2. Processing steps, first determine what the access method is fixed:

1) If it is FTTB access mode:

1) It is recommended to check whether the network cable is connected.

2) It is recommended to restart the FTTB device.

If the phone is a problem, the user can directly replace it with a new landline phone.

1) It is recommended to check whether the ** line contact is good.

2) Check whether the ** phone is normal, and replace the phone for testing.

3) If there is ADSL, check whether the separator is connected.

You can also report the fault through the operator's customer service, and a staff member will come to the door to detect the fault after the fault is reported.

If you are using a Huawei phone and you hear noise during a call, you can use the following methods to troubleshoot the problem:

1. There is an abnormality in the call with a specific person.

If you're only experiencing this issue when you're on a call to a specific person, it's possible that the device you're talking to is malfunctioning, not your own.

2. There is an abnormality in the call with all people, it is recommended that you try to switch to hands-free mode or plug in headphones for testing.

1) After switching the hands-free mode or plugging in the earphone, there is no abnormality, it may be that the earpiece is blocked or the handset hardware is faulty; Check that the earpiece outlet is not blocked by a protective film or other foreign object, and if you find that it is blocked, remove the screen protector or use a soft brush to remove the foreign object.

2) After switching the hands-free mode or plugging in the earphones, it is still abnormal, please confirm whether the signal of the device is normal; If the device signal is not normal, it will affect the call quality.

3. Try after restoring all settings.

Please follow the steps below:

2) Go to the Reset All Settings page and click Reset All Settings.

3) After entering the lock screen password, confirm it again and tap Reset All Settings.

The path to EMUI is Settings > Advanced Settings > Backup & Reset. When you use reset settings, the switch of the app clone will be turned off, resulting in data loss for the app clone. Before doing this, please back up the data of the clone app.

Not covered by EMUI or above).

After all settings are restored, when you set face or fingerprint unlock, you need to enter the app lock password to verify the binding.

If the call on your device is still abnormal, contact Huawei Consumer Service** (950800), or back up your data in advance (third-party apps such as QQ and WeChat) and go to a nearby service center for help.

Boarding service. Huawei Kelu Yanhu Service Center.

Repair spare parts** inquiry.