Google Android 2.3 User Manual page 359

Settings
policy if you exceed the data threshold for the period. Contact your carrier for more
information about its mobile network data use policy.
Access Point Names
access point configurations; or press Menu
carrier about how to use the tools on this screen.
Use only 2G networks
your phone from connecting to higher-speed networks. See "Limit your data
connection to 2G networks" on page 59.
Network operators
networks that are compatible with your phone. Consult your carrier to understand the
billing implications of selecting another carrier.
AUG-2.3-103
Opens the APNs screen, where you can select mobile
to add a new APN. Consult your
Check to obtain slightly better battery life, by preventing
Opens a screen that searches for and displays mobile
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Android User's Guide