Zte A139+ User Manual page 49

End key Exit
Troubleshooting
This section describes how to troubleshoot some problems when they occur to
your phone. If you cannot deal with them, contact your local dealer.
1. "Enter PIN" is shown when the phone is switched on.
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.
2. "Insert SIM" is shown when the phone is switched on.
Turn off your phone and make sure that you have inserted a valid SIM card.
3. "Enter Phone Lock" is shown when the phone is switched on.
Enter the handset lock code.
4. No key tone volume when pressing keys.
Check the keypad tone in User Profiles-Customize.
5. No incoming ring tone.
Check the ringing tone and ringing volume settings in User Profiles-Customize.
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