Samsung SGH-I907ZKAATT - Manual (Page 91)

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• Strong alphanumeric: This password must be at least seven
characters in length and contain at least three of the following:
uppercase/lowercase letters, numerals, and punctuation.
When a password is configured, there is a “Prompt if device
unused for” option that allows a length of time range from 0
minutes - 24 hours. When this option is set, you can continue to
use the SGH-i907 until the screen turns off due to inactivity. If the
device is inactive for a greater amount of time than specified in
this setting, a password must be entered when you turn the
device back on.
To set the password:
1. From the Today screen, press the Start key ( ) to
activate the Start menu.
2. Select Settings ( ) Personal tab Lock ( ).
3. Select the check box next to Prompt if device unused for.
4. Select the Minutes drop down menu and select the amount
of unused time required before you are prompted for a
password if the phone becomes idle.
5. Select the Password type box and select either Simple PIN
or Strong alphanumeric.
6. Select the Password box and use either your QWERTY
keypad or keypad to enter the password you want.
Re-enter the password in the Confirm box.
7. Select , then select Yes to confirm.