Protecting Your Phone With Encryption - Zte Z557BL User Manual

 Tap PIN or Password to set a numeric PIN or a password
that you must enter to unlock the screen.
3. For Pattern, PIN, or Password lock, select whether to protect
your phone by requiring
before it starts up. Tap CONTINUE.
4. For Pattern, PIN, or Password lock, select how you want
notifications and their contents to show when the phone is
locked, then tap DONE.
NOTES:

Screen lock options are listed in the approximate order of the
strength of their security,
which provide no security. A pattern provides minimal security,
although it can be more convenient than the stronger options.

Remember the pattern, PIN, or password you set. Otherwise,
you will have to upgrade the phone software to use the phone.
(see Upgrading the Phone Software).

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 more. 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.
your pattern, PIN, or password
starting with None and Long press,
30