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Solve problems
“Enter PUK”
• The PIN has been entered incorrectly three times
in succession, and the SIM card is now blocked.
Enter the PUK supplied by your service provider.
“No service,” “Network failure,” or “Not done”
displays
• The network connection has been lost. You may be
in a weak signal area. Move and try again.
• You are trying to access an option for which you
have no subscription with your service provider.
Contact the service provider for further details.
You have entered a number but it was not dialled
• Be sure that you have pressed [
].
• Be sure you have accessed the right cellular
network.
• Be sure that you have not set an outgoing call
barring option.
Your correspondent cannot reach you
• Be sure that your phone is switched on. ([
]
pressed for more than one second.)
• Be sure that you are accessing the correct cellular
network.
• Be sure that you have not set an incoming call
barring option.
Your correspondent cannot hear you speaking
• Be sure that you have switched on the
microphone.
• Be sure that you are holding the phone close
enough to your mouth. The microphone is located
at the bottom of the phone.
The phone starts beeping and “Warning. Low
battery” flashes on the display
• Your battery is insufficiently charged. Recharge the
battery.
The audio quality of the call is poor
• Check the signal strength indicator on the display
(
). The number of bars indicates the signal
strength from strong (
) to weak ( ).
• Try moving the phone slightly or moving closer to a
window if you are in a building.
Summary of Contents for GH68-09404A
Page 2: ...SGH D520 User s Guide ...