What if there is an echo from Apple's mobile phone?

Press and hold the power button for a few seconds, and the shutdown and restart page will pop up. Click the "Restart" button to see if it has been restored.

2. Upgrade the mobile phone system:

Turn on the phone, click the "Settings" icon, find "System Upgrade" on the settings page, and click the "System Upgrade" option. After entering the system upgrade page, it will show whether the mobile phone system needs to be upgraded. If you need to upgrade, click Upgrade. After upgrading the system, check whether the echo problem is solved.

3, turn off the phone noise reduction function:

Generally, the echo will be eliminated after the noise reduction function of mobile phone is turned off, but if there is still echo after the noise reduction function is turned off, you can block the small hole next to the earphone hole and check whether there is echo.

4. Eliminate mobile phone data:

Click the "Settings" icon, click "More Settings" on the settings page, and then click "Backup Reset" to enter the backup reset page of the system. Click Back Up Data on this page, and then click Clear All Data.