Siemens U15 사용자 설명서

At the 

 prompt:

Your phone’s four-digit unlock code is originally set to 1234, 

and the six-digit security code is originally set to 000000. Your 

service provider may reset these numbers before you receive 

your phone.
If your service provider has not reset these numbers, we 

recommend that you change them to prevent other users from 

accessing your personal information or modifying your phone 

settings. The unlock code must contain four digits, and the 

security code must contain six digits. Be sure to note the new 

numbers.

Your service provider may retain your phone’s security 

code for customer service purposes. In this case, you 

cannot use phone features that require the security code 

(such as master clear, master reset, and the unlock code 

bypass feature).

If the only password you can change is the unlock code, 

the 

 menu is unavailable and the 

 option appears on the 

 menu. In this 

case, open the unlock code editor by selecting: 

M

 

>

 >

 >

 >

.

keypad keys

enter your four-digit unlock code
If you forget your unlock code, 

see page 44.

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unlock your phone