Troubleshooting - Sony Xperia Z3 User Manual

Troubleshooting

Check Here First
Check the following Q & A. If problem persists, visit your
nearest a SoftBank Shop or contact
Information.
Hints
Q. Handset freezes/operation is unstable
A. Power on handset again. If you are unable to power
off handset, Press & Hold
the same time for approximately three seconds, and
release your finger after it vibrates three times. Power
on handset again. Data that was being edited is erased
after handset is powered on again.
Q. Operation is unstable after a new application was
installed
A. The newly installed application may be the cause.
Uninstall the application in Safe mode. See
"Uninstalling Applications." To power on handset in
Safe mode:
(Long Press) Touch & Hold
Check Display, OK
・After powering on in Safe mode, "Safe Mode" appears
at lower left.
・After restarting in Safe mode, handset can be
powered on as usual.
・Before powering on handset in Safe mode, it is
recommended that you back up important data.
・By powering on handset in Safe mode, added widgets
may be deleted.
Q. Cannot use phone, mail, or Internet
A. Check whether you are where signal is weak or out of
service area.
A. Power on handset again.
A. Is handset in Airplane mode? To check that Airplane
mode is canceled:
In Home Screen,
Airplane mode (
A. Is data communication disabled? To check that data
communication is enabled:
In Home Screen,
Mobile networks
)
A. Is a disabled access point set? To reset to initial
settings:
In Home Screen,
Mobile networks
Reset to default
Customer Service General
and Volume Up Key at
Power off
(Settings) More...
)
(Settings) More...
Mobile data traffic (
(Settings) More...
Access Point Names
Q. Battery level goes down quickly
A. Are you where signal is weak or have been out of
service area for a long period? Calling where signal
is weak or being out of service area uses a lot of
Battery.
Q. Cannot install applications
A. Applications cannot be installed with only a little free
space on handset or SD Card. To check free space,
see "Storage." Applications not supported by handset
cannot be installed.
Q. Cannot unlock screen
A. Power on handset again. If you are unable to power
off handset, Press & Hold
the same time for approximately three seconds, and
release your finger after it vibrates three times. Power
on handset again. Data that was being edited is erased
after handset is powered on again.
Q. Display is dark
A. If handset becomes high temperature, Display may
become dim. This is normal.
175
and Volume Up Key at