ZTE Corporation ZTECS550 Manuale Utente
ZTE S550 User Manual
Confidential and Proprietary Information of ZTE CORPORATION 27
Problem Possible
causes
Possible
solution
• Poor signal.
Move to an open space, or if you are
inside a building, move closer to a
window.
inside a building, move closer to a
window.
You cannot answer
incoming calls.
incoming calls.
• You have activated the Call Barring feature.
Go to Settings > Call > Call
Barring, and then select Cancel all
call barring.
Barring, and then select Cancel all
call barring.
• You have activated the Call Barring feature.
Go to Settings > Call > Call
Barring, and then select Cancel all
call barring.
Barring, and then select Cancel all
call barring.
You cannot make
outgoing calls.
outgoing calls.
• You have activated the Fixed Dial Number feature.
Go to Settings > Security > Fixed
Dial Numbers and select OFF to
turn this feature off.
Dial Numbers and select OFF to
turn this feature off.
PIN code is
blocked.
blocked.
• You have entered an incorrect PIN code three
consecutive times.
consecutive times.
Contact your service provider. If the
service provider provides the (U)SIM
card’s PUK code, use the PUK code
to unlock the (U)SIM card.
service provider provides the (U)SIM
card’s PUK code, use the PUK code
to unlock the (U)SIM card.
Unable to enter
information into the
phone book.
information into the
phone book.
• The phone book’s memory is already full.
Delete unnecessary data from the
contacts (Directory).
contacts (Directory).