Sony Xperia 4 User Guide

To turn data traffic on or off
1 From your Home screen, tap 
.
2 Find and tap  Settings > Data usage .
3 Drag the slider beside  Mobile data to turn data traffic on or off.
When data traffic is turned off, your device can still establish Wi-Fi® and Bluetooth®
connections.
To set a data usage warning
1 Make sure that mobile data traffic is turned on.
2 From your Home screen, tap 
.
3 Find and tap  Settings > Data usage .
4 To set the warning level, drag the warning line to the desired value. You receive
a...

To select another network manually
1 From your Home screen, tap 
.
2 Find and tap  Settings > More…  > Mobile networks  > Network operators .
3 Tap  Search mode , then select Manual.
4 Select a network.
If you select a network manually, your device will not search for other networks, even if you
move out of range of the manually selected network.
To activate automatic network selection
1 From your Home screen, tap 
.
2 Find and tap  Settings > More…  > Mobile networks  > Network operators .
3 Tap  Search...

Synchronising data on your deviceSynchronising with online accounts
Synchronise your device with contacts, email, calendar events and other information
from online accounts, for example, email accounts such as Gmail™ and Exchange
ActiveSync, Facebook™, Flickr™ and Twitter™. You can synchronise data
automatically for all accounts by activating the auto-sync function. Or you can
synchronise each account manually.
To set up an online account for synchronisation
1 From your Home screen, tap 
.
2 Tap...

To change the settings of an EAS account
1 From your Home screen, tap 
.
2 Tap  Email , then tap 
.
3 Tap  Settings  and select an EAS account, then change the settings of the EAS
account as desired.
To set a synchronisation interval for an EAS account
1 From your Home screen, tap 
.
2 Tap  Email , then tap 
.
3 Tap  Settings  and select an EAS account.
4 Tap  Check frequency  > Check frequency  and select an interval option.
To remove an EAS account
1 From your Home screen, tap 
 > Settings .
2 Under...

Basic settingsAccessing settings
View and change settings for your device from the Settings menu. The Settings menu
is accessible from both the Application screen and the Quick settings panel.
To open the device settings menu from the Application screen
1 From your Home screen, tap 
.
2 Tap  Settings .
To view information about your device
1 From your Home screen, tap 
.
2 Find and tap  Settings > About phone .
To open the Quick settings panel
• Using two fingers, drag the status bar downwards.
To select...

To set a ringtone
1 From your Home screen, tap 
.
2 Find and tap  Settings > Sound  > Phone ringtone .
3 Select an option from the list or tap 
 to select a music file saved to your
device.
4 To confirm, tap  Done.
To select the notification sound
1 From your Home screen, tap 
.
2 Find and tap  Settings > Sound  > Notification sound .
3 Select an option from the list or tap 
 and select a music file that is saved to
your device.
4 To confirm, tap  Done.
Some applications have their own specific...

To unlock a blocked SIM card using the PUK code
1 Enter the PUK code and tap 
.
2 Enter a new PIN code and tap 
.
3 Re-enter the new PIN code and tap 
.
If you enter an incorrect PUK code too many times, you need to contact your network operator
to get a new SIM card.
Screen settings
To adjust the screen brightness
1 From your Home screen, tap 
 .
2 Find and tap  Settings > Display  > Brightness .
3 Unmark the  Adapt to lighting conditions  checkbox if it is marked.
4 Drag the slider to adjust the...

To set when the Daydream screen saver starts
1 From your Home screen, tap 
 .
2 Find and tap  Settings > Display  > Daydream .
3 Drag the slider beside  Daydream to the right.
4 To activate the Daydream screen saver immediately, tap  Start now.
5 To set automatic activation options, tap  When to daydream and then select an
option.
Screen lock There are several ways to lock the screen. The security level of each lock type islisted below in order of weakest to strongest:
• Swipe – no protection, but you...

To unlock the screen using the Face Unlock feature
1 Activate the screen.
2 Look at your device from the same angle you used to capture your Face
Unlock photo.If the Face Unlock feature fails to recognise your face, you must use the backup unlock
method to unlock the screen.
To create a screen lock pattern
1 From your Home screen, tap 
 .
2 Find and tap  Settings > Security  > Screen lock  > Pattern .
3 Follow the instructions in your device.
If your lock pattern is rejected five times in a row when you...

To change the language
1 From the Home screen, tap 
.
2 Find and tap  Settings > Language & input  > Language .
3 Select an option.
4 Tap  OK.
If you select the wrong language and cannot read the menu texts, find and tap . Then select
the text beside 
 and select the first entry in the menu that opens. You can then select the
language you want.
Date and time
You can change the date and time on your device.
To set the date manually
1 From the Home screen, tap 
 .
2 Find and tap  Settings > Date & time .
3...