How to lock Redmi 9a mobile phone?

First, find the icon of the security center on the mobile phone screen.

On the Security Center page that opens, click the Optimize and Accelerate icon.

Then click "Don't clean" in the opened optimization and acceleration page to enter the setting button.

This will open the page of locking task management, and find the application you want to lock in the page.

Click the switch behind the application to set it to open.

Method 2

We can also open the task management of the mobile phone and press and hold the task that we want to lock.

Then click the lock button on the task shortcut toolbar.

This can also lock the task so that the application will not be cleaned up in the future.

Summary:

Method 1:

1. First, find the icon of the security center on the phone screen.

2. In the security center page that opens, click the optimization and acceleration icon.

3. Then click the "Don't Clean" button on the optimization and acceleration page that opens.

4. At this time, the page of locking task management will be opened, and the application you want to lock will be found in the page.

5. Click the switch behind the application to set it to open.

Method 2:

1. We can also open the task management of the mobile phone and press and hold the task that you want to lock.

2. Then click the Lock button on the task shortcut toolbar.

3. This can also lock the task so that the application will not be cleaned up in the future.