Failure Analysis - Zte X991 User Manual

錯誤! 使用 [常用] 索引標籤將 标题 1 套用到您想要在此處顯示的文字。

Failure Analysis

Symptoms
Unable to turn on
the phone
Automatic
power-off
Inadequate standby
time
Unable to connect
the network
Call drop
Do not ring upon
incoming calls
Prompt to input
PUK
Possible Causes
Inadequate battery
capacity
Poor contact
Seriously poor battery
capacity
Deceasing of battery
performance
Poor network signal
Poor network signal
Out of the service area
Poor network signal
Set "Silent" or minimum
volume
SIM card locked due to
the continuous entering of
wrong PIN code for
three times.
43
Solutions
Charge the battery
Reinstall the battery
Recharge the battery
Replace the battery
Turn off the phone as the signal is
poor.
Move to other places
Make sure your phone is in network
service area
Move to other places
Enter "User Profiles" to set
Non-silent or check the ringing
volume
Contact your operator.