Samsung Galaxy S II Online User's Manual page 60

4G Settings
Configure options for connecting to the Sprint 4G
WiMAX network.
Note:
The availability and range of the Sprint 4G WiMAX
network depends on a number of factors, including if
you're within a 4G WiMAX coverage area, the distance
to the Sprint 4G WiMAX base station and infrastructure,
and other objects through which the signal passes.
Turning 4G On or Off
1.
Press and tap
2.
Tap the
4G settings
access to the Sprint 4G WiMAX network On or Off.
45 2C. Settings
> Settings.
OFF/ON slider
Configuring 4G Settings
1.
Press
2. Tap the
access to the Sprint 4G WiMAX network On. 4G
must be turned on to configure settings.
3. Choose settings:
Network notification
notifies you when an open 4G WiMAX network is
available.
4G Networks
networks. Tap a network for more information.
to turn
Scan now
networks.
and tap
> Settings.
OFF/ON slider
4G settings
: When enabled, your phone
: View information about available 4G
: Tap to search for available 4G
to turn