Samsung SGH-I637MAAATT User Manual
Page 121
 
Troubleshooting 117
Problem
Description Solution
“PUK Required” displays
The PIN code was entered incorrectly 
three times in succession and the SIM 
card is now blocked. Enter the PUK 
supplied by your service provider.
I forgot the password, PIN, 
reset password, or PUK 
codes
If you forget, lose or change the lock code, 
contact your phone dealer. If you forget or 
lose a PIN or PUK code, or if you did not 
received such a code, you will need to 
reset your phone. See “Resetting the 
Phone - Power Off” on page 29. For 
information about passwords, contact 
your access point provider, for example, a 
commercial Internet Service Provider 
(ISP), service provider, or network 
operator.
I entered an incorrect 
password too many times, 
now my device won’t boot 
up.
You will need to reset your phone. See 
“Resetting the Phone - Power Off” on 
page 29.
i637.book Page 117 Monday, April 20, 2009 10:19 AM