1. Tap Pattern Lock on the Account and Security page and create a gesture password to enable the Pattern Lock feature. Then, the gesture password must be used to open the app.

2. If the gesture password is forgotten, tap Forgot Pattern Lock at the bottom of the unlocking page. In the dialogue box that appears, tap Re-login, log in to the app again, and then create a gesture password again.

3. If the gesture password is entered incorrectly five times in a row, the current account will be logged out. Then, the account password must be used to verify the identity and reset the gesture password.