Zte txtster CDMA 1X EVDO User Manual page 107

To dial an emergency call
You can still dial an emergency call, even if the keypad is locked. Please enter the call number
directly and press the Send Key.
Can not connect to the network
Check whether the phone is in the CDMA network service area or move other places to try
again.
Can not receive a new message
Check whether the network condition is ok, and then check whether the Inbox is full. If you
turn off the Auto Delete Inbox function, you may not receive new messages when the inbox
is in full status. You should delete some messages and change the settings.
Can not establish Three-Way Call
Check the network condition and whether you have applied this service from your network
provider.
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