Sony XPERIA XZ Instruction Manual page 204

Setting the preferred network type
From the Settings screen,
1
u
[Settings]
u
networks] [Preferred network
type].
Tap any of [4G (preferred)/3G/
2
GSM]/[4G/3G]/[3G/GSM]/[GSM
only].
Select "4G (preferred)/3G/GSM" to
･
switch available network automatically.
Using VoLTE during international
roaming
Set to enable VoLTE when VoLTE is available
during international roaming.
From the Home screen,
1
u
[Settings]
networks].
Tap of "Enable VoLTE".
2
u u
[More] [Mobile
u u
[More] [Mobile
Date & time settings
When "Automatic date & time", "Automatic
time zone" in "Date & time" are ON, the date,
time and time differences of the terminal
clock are corrected by receiving the
information related to time and time
differences from the network of overseas
network operator you connect to.
Correction of the time/time differences may
･
not be performed correctly depending on the
network of overseas network operator. In that
case, set time zone manually.
Timing of correction varies by the overseas
･
network operator.
Setting Date & time (P.184)
･
About inquiries
For loss or theft of the terminal or docomo
･
nano UIM card, immediately contact
DOCOMO from the spot to take the necessary
steps for suspending the use. For inquiries,
refer to the last page. You can also suspend
the use from My docomo. Note that you are
still liable for the call and communication
charge incurred after the loss or theft
occurred.
For using from land-line phone, entering
･
"International call access code" or "Universal
number international prefix" for the country is
needed.
International roaming
202