Samsung SM-G130M User Manual page 45

Personalising
Pattern
Draw a pattern by connecting four dots or more, and then draw the pattern again to verify it.
Set a backup PIN to unlock the screen when you forget the pattern.
PIN
A PIN consists of numbers only. Enter at least four numbers, and then enter the password
again to verify it.
Password
A password consists of characters and numbers. Enter at least four characters including
numbers and symbols, and then enter the password again to verify it.
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