The lock screen sound of Apple 6splus upgrade ios10 is caused by the system upgrade. The lock screen sound of Apple 6splus upgrade ios10 can only be turned on or off. If it is not needed, you can choose to turn it off.
1. Open the settings icon on the desktop;
2. After entering the settings, select the sound to enter;
3. After entering the sound, select to turn off the lock sound or turn it on That’s it.