Add a security pattern to some installed apps that you treat as private or personal.
 You'll be prompted to draw it whenever you open a selected app after waking up your phone from Sleep mode.
- 
From the 
				Home screen, tap 
				
, and then find and tap 
				Boost+. 
			 
 
- Tap Lock apps.
 
- Draw your desired lock pattern.
 
- Enter your birthday.This will be your security question in case you've forgotten your password.
 
-  Tap the On/Off switch next to an app to require a lock pattern to open it.
 
- Press 
. 
Tip: To change the app lock pattern, tap .