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Depending how you use your phone, you may want to set some
form of automatic screen lock to prevent
unauthorized access. If a screen lock has been set, the screen locks
when your phone's display goes to sleep.
To adjust your tablet lock settings:
1 From a Home or All Apps screen, touch the Settings icon .
2 Touch Personal > Security > Screen lock.
3 Touch the type of lock you want and follow the onscreen
instructions.
You can choose among these lock options, listed in approximate
order of strength:
Slide provides no protection, but lets you get to the Home
screen quickly, or open Camera and start taking pictures
immediately.
Pattern lets you draw a simple pattern with your finger to
unlock the phone.
Password requires four or more letters or numbers. This is the
most secure option, as long as you create a strong password.
Important For best security, specify a password that is
A least 8 characters long.
Contains a mixture of numbers, letters, and special symbols
Doesn't contain any recognizable words or phrases.
Related settings
Settings > Device > Display > Sleep
Settings > Personal > Security > Make pattern visible
