Scroll down the screen and select Silent Vibration to turn it on.

There is a setting in the theme that can be turned off.

The following methods are available to turn off the sound switch:

1. Open the folder and find the boot sound systemetcPowerOn.wav folder, which will be turned off after deletion. (Note that this operation will completely lose files and need to be backed up in advance)

2. Open the personalized theme (that is, the original theme style), click to enter the mix and match, click to open the startup music, enter local, and select None.

3. You can also open Settings, find Sounds and Vibration, and turn it on

4. Find other prompts and turn them off to turn off the startup ringtone.