T-Mobile Concord II User Manual page 129

Problem
SIM card error
Unable to connect
to the network
PIN Code blocked
Possible causes
SIM card malfunction or damage.
SIM card inserted improperly.
Debris on the SIM card contacts.
SIM card invalid.
You are not within the network's
service area.
Poor signal.
You have entered an incorrect PIN
code three consecutive times.
Take the SIM card to your
service provider for testing.
Insert the SIM card
properly.
Use a soft, dry cloth
to clean the SIM card
contacts.
Contact your service
provider.
Check the service area
with your service provider.
Move to an open space, or
if you are inside a building,
move closer to a window.
Contact your service
provider. If the service
provider provides the SIM
card's PUK code, use the
PUK code to unlock the
SIM card.
7
Possible solution