LG VS660 - Manual (Page 61)

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Connecting to Mobile Networks
When you buy your phone and sign up for service, your phone is
configured to use your provider's mobile networks for voice calls
and for transmitting data.
Different locations may have different mobile networks available.
Initially, your phone is configured to use the fastest mobile network
available for data. But you can configure your phone to use only a
slower 1X network for data, to extend the life of your battery,
between charges. You can also configure your phone to access a
different set of networks entirely, or to behave in specific ways
when roaming.
The icons in the Status bar indicate which kind of data network
you're connected to and the network signal strength.
When connected to slower networks, you may want to postpone
using your phone for data-intensive tasks until you are connected to
a faster network again, or find a Wi-Fi network to connect to.
To disable data when roaming
You can prevent your phone from transmitting data over other
carriers' mobile networks when you leave an area that is covered
by your carrier's networks. This is useful for controlling expenses if
your cell plan doesn't include data roaming.
1. Press the Home Key , then touch the Applications
Launcher Key .
2. Scroll down and touch Settings > Wireless & networks >
Mobile networks .
Connecting to Networks and Devices
Connected to the 3G network (EVDO revA)
Connected to a 2G network (1x)
The more bars that are lit, the stronger the wireless signal
Connected to another wireless service provider’s network (roaming)