Lenovo IdeaPad A1-07 User Manual page 31

Once you have set and activated the Pattern Unlock function,
then the Unlock keyboard will be displayed on the screen
whenever the screen is unlocked by the slide. Draw your
pre-selected pattern on the screen with your finger using the
Unlock keyboard. After the preset pattern has been correctly
drawn, the screen will become unlocked.
Touch <PIN>. You will need to input at least 4 numbers as
the PIN code to unlock the screen.
Touch <Password>. You will need to input at least 4
characters as the password to unlock the screen.
SIM Card Lock Setting (Specific models only)