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19
Problem
PIN2 code is blocked
'SIM failure' is displayed on my phone
Poor display
Can't connect to the network
Can't make or receive calls
Possible Cause
3 incorrect entries
The handset is locked to a network and a SIM
from another network has been inserted into
the phone
SIM card is inserted incorrectly or missing
SIM card is damaged or dirty
Low temperature
High temperature
Power Saving settings
Wallpaper settings
Weak signal
Invalid SIM card
'Network denied'/'No network'
Operating band is incorrect
Weak signal
153
Possible Corrective Action
Enter the PIN2 code. This may have been supplied
with your SIM, but if not contact your service
provider. Sendo cannot supply your PUK code.
Remove the SIM and insert the correct network
SIM. Contact your service provider.
Check that the SIM card is inserted correctly and
press p.
Visually check the SIM and clean the gold-
coloured contacts with a dry cloth. Try again.
Ideally the phone should be kept at room
temperature. Move to a warmer place and allow
the phone to warm up. Try again.
Ideally the phone should be kept at room
temperature. Move to a cooler place and allow
the phone to cool down.
Check the phone is set up with a bright enough
display and that the display timeout is not too fast.
See Programs>Setting>Power Management.
If you've added your own wallpaper, check that
the colours do not clash with the text colours used
on screen as this could make it difficult to
distinguish.
Move into an area of better coverage. If you are
inside try moving closer to a window.
Contact your service provider.
Try reselecting the network. Switch the phone off
and on again.
Check the band you are operating on. North
America operates on 1900, but Europe and Asia
both operate on 900/1800 band. Check with
your service provider.
Check that the service provider name is displayed
on the screen. If not, try to reconnect to the
network or move into an area with a better signal.
Sendo X User Guide
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