Describing a mobile telephone having a choice of three operating frequencies alowing it to be used in Europe and North America(adjective)
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Use "tri-band" in a sentence
"The LG KC550 has three GSM network and works on tri-band technology and that gives the user the ability to roam around worldwide."
"The BlackBerry Bold is tri-band, which means it will work on most cellphone networks around the world."
"Also featuring a virtual qwerty Keyboard, large colour screen, useful widgets including weather, news, clock and music player as well as a scroll wheel to control all functions, the OT-708 is a tri-band handset and comes with a 4GB SD slot to enable storage of all pictures, videos, and other downloaded applications."