method One:
Triple-Click the "Home" button to open the Talkback function.
Method Two:
1. Under the Standby page, click "Application".
2. Select "Set".
3. Click on "My Device".
4. Slide up the screen and select "Accessibility".
5. Click "Talkback".
6. Click on the "slider" to the right of "talkback".
7. After reading the prompts, click "OK".
8. At this point the slider becomes green to represent the open.
Method Three:
1. Long press the right middle position of the phone "power" key.
2. After the screen appears "Device Options", double pointing to the screen for a few seconds.
3. When the "small hand" icon appears in the upper-left corner of the screen, the feature is turned on, and then the "Back" button in the lower-right corner returns to the standby page.
Tip: Method Three needs to enter the application first-settings-my device-accessibility-accessibility Shortcuts-slider open