Samsung SGH-I637MAAATT User Manual
Page 120
 
116
Problem
Description Solution
The bars next to
disappear
•
If you just turned on your phone, 
wait for about 2 minutes, until your 
phone finds the network and 
receives a signal from the network.
•
If you are in a tunnel or in an 
elevator, the phone may not be 
able to receive the network signal 
properly. Move to an open place.
•
This may display when you move 
between different service areas. It 
is normal.
The display is not clear
In direct sunlight, you may not be able to 
see the display clearly. Moving to a place 
with different lighting should solve this 
problem.
White lines display on the 
screen
This may happen if you turn on the phone 
after a long period of disuse, or after 
removing the battery without turning off 
the phone. This is not related to the 
phone’s life or performance. The display 
should correct itself shortly.
“PIN code” displays
•
You are using your phone for the 
first time. You must enter the 
Personal Identification Number 
(PIN) supplied with the SIM card.
•
The PIN check feature was 
enabled. Each time the phone is 
switched on, the PIN has to be 
entered. To disable this feature, 
select Start 
➔
More
➔
More
➔
Settings
➔
More...
➔
Security
➔
Disable SIM PIN, and enter the PIN.
i637.book Page 116 Monday, April 20, 2009 10:19 AM