Samsung E2510 User Manual page 47

troubleshooting
If you are having trouble with your mobile phone, try these troubleshooting procedures before contacting a service
professional.
While using your phone, the following messages
may appear:
Message Try this to solve the problem:
Please insert Ensure that the SIM or USIM card
SIM card is installed correctly.
When the phone lock feature is
Phone lock enabled, you must enter the
password you set for the phone.
When using the phone for the first
time or when the PIN requirement
is enabled, you must enter the
PIN lock
PIN supplied with the SIM or USIM
card. You can disable this feature
by using the
a
PIN lock menu.
Message Try this to solve the problem:
Your SIM or USIM card is
blocked, usually as a result of
entering your PIN incorrectly
PUK lock
several times. You must enter the
PUK supplied by your service
provider.
Your phone displays "Service unavailable" or
"Network error."
• When you are in areas with weak signals or poor
reception, you may lose reception. Move to
another area and try again.