LAUNCH    X-431 PRO MINI User Manual 
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locked automatically and the system enters sleep mode to save power. 
1.  On the home screen, tap Settings > Display > Sleep. 
2.  Choose the desired sleep time. 
2.9 Set screen lock 
This function is designed to lock the screen and buttons to avoid accidental 
operations while X-431 PRO MINI keeps unused. 
1. On the home screen, tap Settings > Security > Screen lock. 
2. Choose the desired screen lock mode and follow the on-screen instructions to 
finish your setting. 
  Note: You are recommended to set screen lock as “None” since X-431 PRO MINI is 
a frequently used diagnostic tool.