An unlocked phone is a cell phone that can be used with various GSM-compatible carriers worldwide (a GSM phone requires a SIM card). That means an unlocked cellphone can be used within United States with T-Mobile, Cingular/AT&T, etc., provided the phone supports the frequencies of the service provider. Unlocked cell phones can also be used with many other GSM service providers/carriers around the world.
Many manufacturers offer unlocked GSM cell phones, including: Nokia, Motorola, Sony Ericsson, Samsung, LG, Alcatel
Sony Ericsson products have universal appeal and are tangibly different in the key areas of imaging, design and applications. The company has consistently launched products that make best use of the major mobile communications. Sony Ericsson products have universal appeal and are tangibly different in the key areas of imaging, design and applications. The company has consistently launched products that make best use of the major mobile communications technologies, such as the 2G and 3G platforms, while enhancing its offerings to entry level markets.
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