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11.1.4
Tethering & portable hotspot
This function allows you to share your phone's mobile data connection via
USB or as a portable Wi-Fi access point (Please refer to "6.5 Sharing your
phone's mobile data connection").
11.1.5
VPN settings
A mobile virtual private network (mobile VPN or mVPN) provides mobile
devices with access to network resources and software applications on
their home network, when they connect via other wireless or wired
networks. Mobile VPNs are used in environments where workers need to
keep application sessions open at all times, throughout the working day,
as the user connects via various wireless networks, encounters gaps in
coverage, or suspend-and-resumes their devices to preserve battery life. A
conventional VPN cannot survive such events because the network tunnel
is disrupted, causing applications to disconnect, time out, fail, or even the
computing device itself to crash.
For more information of VPN, please refer to "6.6 Connecting to virtual
private networks".
11.1.6
Mobile networks
Data enabled
If you do not need to transmit data on all mobile networks, unmark the
check box of Data enabled to avoid incurring significant charges for data
use on local carrier mobile networks, particularly if you do not have a
mobile data agreement.
Data roaming
If you don't need to transmit data on other carriers' mobile networks,
unmark the check box of Data roaming to avoid incurring significant
roaming charges.
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Network Mode
Touch to select network mode.
Cell broadcast/Cell broadcast settings
Enable receipt of CB messages by marking the check box of Cell broadcast.
You can access a series of adjustable CB settings by touching Cell
broadcast settings.
Access Point Names
You can select your preferred network with this menu.
Use only 2G networks
You can select to use only 2G networks.
Network operators
You can select a network operator.
11.2
Call settings
Use Call settings to configure normal phone call settings and other special
features offered by your carrier. You can also use Call settings to configure
the phone so that it can place outgoing calls only to a fixed set of phone
numbers.
11.2.1
Fixed Dialling Numbers
Fixed Dialling Number (FDN) is a service mode of SIM, where outgoing
calls are restricted to a set of phone numbers. These numbers are added to
the FDN list. The most common practical application of FDN is for parents
to restrict the phone numbers to which their children can dial.
For security reasons, you'll be prompted to enable FDN by entering SIM
PIN2 which is usually acquired from your service provider or SIM maker.
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