Troubleshooting - Zte F866 User Manual

Troubleshooting

If you encounter a problem with your phone, first refer to this Troubleshooting Guide before contacting
your service provider.
Symptom
Enter PIN" is shown when
the phone is switched on.
"Insert USIM" is shown when
the phone is switched on
"Enter password" is shown
when the phone is switched
on
No key tone when pressing
keys.
No incoming ring tone.
No alarm tone when the
reminder time reaches.
A phone number cannot
be dialed.
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F866 User Manual I Troubleshooting
Resolution
Input the PIN or input the new PIN if you have changed the code. The
code can be set "off" if you do not want to input.
Turn off your phone and make sure that you have inserted a valid
USIM card.
Enter the handset lock code or the new code if you have changed it.
The code can be set "off" if you do not want to input. (Please refer
to Section "Security Settings".)
Check the key tone setting in the profile.
Check the ringing tone and ringing volume settings in the profile
Check the profile setting and the alarm ring setting
Check whether call restriction is set to the number. Please refer to
Section "Call Barring".