Samsung Katalyst User Manual page 27

Connect to Wi-Fi while you're on the go (hotspots)
•
Connect to T-Mobile HotSpot locations all across the U.S. without needing
a T-Mobile HotSpot username and password as well as any open Wi-Fi
access point.
Connect to GSM
•
Connect to the GSM network when Wi-Fi is not available or if you are not
interested in connecting to Wi-Fi.
Here's How it Works
Rather than using GSM radio as your phone normally would to connect to cellular
towers, your T-Mobile Wi-Fi compatible phone uses UMA (Unlicensed Mobile Access)
technology to use a wireless broadband Internet connection for your mobile phone
services. This includes voice calls, mobile browsing, e-mail, Picture Messaging, Text
Messaging, and basically any mobile service for which your phone uses a network
connection.
UMA technology offers fast, reliable connectivity using your mobile phone for
virtually all of your communications. UMA connects your mobile phone to your GSM/
GPRS services through WLAN (802.11) and allows you to handle calls, send and
receive messages, and check your e-mail. This technology allows you to use your
mobile phone in all of the ways you normally do. The only difference with using UMA
technology is that you are connecting through a wireless broadband Internet
connection (Wi-Fi).
What is Wi-Fi?
Wi-Fi, or Wireless Fidelity, is a term that is used generically to refer to any product or
service using any type of 802.11 technology. Wi-Fi networks operate in the
unlicensed 2.4 GHz radio bands, operating at up to an 11 Mbps (802.11b) or 54
Mbps (802.11g) data rate.
Wi-Fi enabled devices (laptops and PDAs as well as UMA phones) can send and
receive data wirelessly from any location equipped with Wi-Fi access. This is
accomplished using wireless routers, installed within a Wi-Fi location. A wireless
router transmits an RF signal to Wi-Fi enabled devices that are within range of the
router. Depending on the particular router, its range is usually about 300 feet. The
speed of the transmission is governed by the speed of the internet connection fed
into the wireless router.
Introducing Your T-Mobile HotSpot @Home Capable Phone
Wi-Fi 24