Mobile Network Settings - Sony Xperia M dual User Manual

To change the SIM card used for data traffic
1 Drag the status bar downwards, then tap
2 Find and tap Dual SIM settings.
3
Under SIM card for data traffic, tap the available SIM card, that is, the card
that you want to switch from.
4 Select the SIM card that you want to switch to.
For higher data speeds, select the SIM card that supports the fastest mobile network, for
example, 3G or LTE.

Mobile network settings

Your device automatically switches between mobile networks depending on what
mobile networks are available in different areas. You can also manually set your
device to use a particular mobile network mode, for example, WCDMA or GSM.
To select a network type
1 Drag the status bar downwards, then tap
2 Find and tap More... > Mobile networks.
3 Select a SIM card.
4 Tap Network Mode.
5 Select a network type.
Your phone supports the concurrent use of one WCDMA network and one GSM network, or
two GSM networks.
To select another network manually
1 Drag the status bar downwards, then tap
2 Find and tap More... > Mobile networks.
3 Select a SIM card.
4 Tap Network operators.
5 Tap Search mode > Manual.
6 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 Drag the status bar downwards, then tap
2 Find and tap More... > Mobile networks.
3
Select a SIM card.
4 Tap Network operators.
5 Tap Search mode > Automatic.
Data roaming
Some network operators allow mobile data connections via mobile networks when
you are outside of your home network (roaming). Note that data transmission charges
may apply. Contact your network operator for more information.
Applications may sometimes use the Internet connection in your home network without any
notification, for example, when sending search and synchronisation requests. Additional
charges may apply when such Internet connections are established while you are roaming.
Consult your network operator for more information.
To activate data roaming
1
From the Home screen, tap
2 Find and tap Settings > More... > Mobile networks.
3 Mark the Data roaming checkbox.
You can't activate data roaming when data connections have been deactivated.
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