Troubleshooting - Zte Vodafone 553 User Manual

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11 Troubleshooting

This section describes how to troubleshoot some problems when they
occur to your phone.
Why can't I turn on my phone as I press the End Key?
Either you didn't press the key longer than 2 seconds, or the phone has
shut down because the battery power level is too low. Please recharge the
battery.
What can I do as my phone dispays "Enter PIN code" when it 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.
What can I do as my phone displays "Unlock"?
Unlock the keypad. See "Keypad lock" in Section 1.5.
Why can't my phone make any sound alerts?
Check the current profile settings.
Why are some calls not processed?
Certain call barring function may have been set to restrict phone usage.
Check the call barring status and cancel as necesary.
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