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  If you touch PIN or Password, you’re prompted to set a 
numeric PIN or a password you must enter to unlock your 
screen.   
The next time you turn on your phone or wake up the screen, you 
must draw your unlock pattern or enter your PIN or password to 
unlock it. 
IMPORTANT: Screen lock options are listed in the approximate 
order of the strength of their security, starting with None and 
Long press, which provide no security. A pattern provides 
minimal security, although it can be more convenient than the 
stronger options. 
Protecting Your Phone With Encryption 
You can encrypt all the data on your phone: Google Accounts, 
application data, music and other media, downloaded information, 
and so on. If you do, you must enter a numeric PIN or password 
each time you power on your phone. 
WARNING! Encryption is irreversible. The only way to revert to 
an unencrypted phone is to perform a factory data reset, which 
erases all your data. 
Encryption provides additional protection in case your phone is 
stolen, and may be required or recommended in some 
organizations. Consult your system administrator before turning it 
on. In many cases the PIN or password you set for encryption is 
controlled by the system administrator. 
Before turning on encryption, prepare as follows: 
1.  Set a lock screen PIN or password.