Locking Screen; Updating Software - Sony Xperia Z4 User Manual

30

Locking Screen

Display is locked after a set period of inactivity.
Alternatively, Press for manual screen lock. This saves
battery power and prevents accidental Touchscreen operation.
Unlocking Screen
In sleep mode (Screen lock active),
Lock screen appears.
Flick screen upwards
Screen is unlocked.
・The method for unlocking the screen can be changed. See
"Security" for the unlock method.

Updating Software

Check whether updates are required via the Internet, and
update as required.
Before Updating Software
Saved data may be lost depending on condition of handset
(malfunctioning, damaged, water seepage, etc.). It is
recommended that you back up important data before
updating software. SoftBank Corp. is not responsible for
damages from loss of data.
Software Update makes a part of settings to the default.
Software Update Cautions
During Update
Handset cannot be used until software is updated. It may
take time to update software.
Signal during Update
Operate handset where signal reception is good and
without changing location. Also operate with adequate
battery charge. Signal becoming weak or Battery becoming
low during an update may cause an update failure. An
update failure may disable handset.
If Using Other Functions
Other functions cannot be operated during a software
update.

Updating Software

Automatic update is set by default. To update software
manually, operate as follows.
In Home Screen, (Settings)