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141
Problem
Possible causes
Possible solution
You cannot
make
outgoing
calls.
You have activated the
Call barring
feature.
Go to
Settings > Call
settings > Call Barring
Settings
, and then
select
Deactive All
.
You have activated the
Fixed dial numbers
feature.
Go to
Settings > Call
settings > Fixed
Dialing Numbers
and
disable it.
PIN Code
blocked
You have entered an
incorrect PIN code three
consecutive times.
Contact your service
provider. If the service
provider provides the
micro-
SIM card’s PUK
code, use the PUK code
to unlock the micro- SIM
card.
Phone
crashes,
reboots,
freeze, or
cannot be
powered on
Some third-party
software is not
compatible with your
phone.
Reset the phone to
factory status.
Enter safety mode and
uninstall the software
that may cause the
problem.
Upgrade the phone
software.
Summary of Contents for Z755
Page 1: ...1 Z755 Mobile Phone User Manual ...
Page 23: ...23 Status Notifications Favorite Tray Shortcuts Shortcut Widget ...
Page 52: ...52 3 Touch Edit profile and edit the VPN settings you want 4 Touch Save ...
Page 72: ...72 3 Touch to select the contacts you want to remove and then touch 4 Touch OK to confirm ...