Samsung Galaxy S6 Edge: How to Enable and Use Smart Lock Trusted Voice Feature in Android 5.1.1 Lollipop

While you're using one of the screen lock types with security lock feature(e.g, pattern, direction lock, PIN, password, or fingerprints), you can use smart lock trusted voice feature to set your Samsung Galaxy S6 Edge to automatically unlock the screen when you do a search with voice search "OK Google" that you record in advance.


How to enable smart lock trusted voice feature?
Assuming that you have Internet connection, you can turn on this feature by using the following steps:

1. While the screen is unlocked, swipe down the top of the screen to open up the notification panel and then tap at the top right to go to the settings menu.
2. Scroll down to the Personal section and then tap Lock screen and security.
   
   
3. Tap Secure lock settings.
   
   
4. Tap Smart lock.
   
   
5. Perform your screen lock type. As the example, if you use fingerprints as your screen lock, place your finger on the Home key to verify your identity.
   
   
6. Tap Trusted voice.
   
   
7. Slide the ON/OFF switch next to From any screen to the right to enable this option and let you do a search with voice search "OK Google" from any screen when the screen is on or your phone is charging.
   
   
8. If you have not used OK Google detection feature yet, you'll be asked to record your voice. Tap Get started to start recording your voice.
   
   
9. Say "OK Google" three times.
   
   
10. Tap Finish to save the recording of your voice.
    
    
11. Slide the ON/OFF switch next to Trusted voice to the right to enable this option and let your phone unlock the screen when you say OK Google.
    
    
12. Perform your screen lock type. As the example, if you use fingerprints as your screen lock, place your finger on the Home key to verify your identity.
    
    
13. A pop up window appears on the screen to tell you that smart lock trusted voice feature is less secure than a pattern, PIN or password and someone else who has similar voice or a recording of your voice could unlock your phone. Tap OK button to continue using OK Google detection as trusted voice.
    
    
14. Smart lock trusted voice feature has been enabled.

How to use smart lock trusted voice feature?
Assuming that your phone has Internet connection, you can use the following steps as the example of using this feature?

1. While the screen is locked, either it's on or off, say "OK Google".
2. When your phone recognizes your voice, the screen will be unlocked and you'll be provided with the voice search screen. Say a keyword you want to search.
3. Swipe the screen to unlock it and view your search result.
4. If you don't use your phone, the screen will be locked automatically when the screen lock delay period is over. Alternatively, if you have set the Power key as the screen lock key, you can instantly lock the screen by pressing the Power key.