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.
You cannot answer
incoming calls.
• You have activated the Call Barring feature.
Go to
Settings > Call > Call
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.
You cannot make
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.
PIN code is
blocked.
• You have entered an incorrect PIN code three
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.
Unable to enter
information into the
phone book.
• The phone book’s memory is already full.
Delete unnecessary data from the
contacts (
Directory
).
