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  2. GSM frequency bands - Wikipedia

    en.wikipedia.org/wiki/GSM_frequency_bands

    A new addition has been the quad-band phone, also known as a World Phone, [5] supporting at least all four major GSM bands, allowing for global use (excluding non-GSM countries such as Japan, South Korea and as well countries where 2G system was shut down to release frequencies and spectrum for LTE networks like Australia (since 2017 ...

  3. Multi-band device - Wikipedia

    en.wikipedia.org/wiki/Multi-band_device

    The term quad-band describes a device that supports four frequency bands: the 850 and 1900 MHz bands, which are used in the Americas, and 900 / 1800, which are used in most other parts of the world. [1] Most GSM/UMTS phones support all four bands, while most CDMA2000/1xRTT phones (mostly North America and voice transmission only) do not, and so ...

  4. Palm Treo Pro - Wikipedia

    en.wikipedia.org/wiki/Palm_Treo_Pro

    The phone originally was released in an unlocked GSM format. The updated release of the phone for CDMA networks featured new hardware specifications, including a more powerful processor, more storage, and less user-available RAM. Mobile phone, CDMA model with 800/1900 MHz bands, with EV-DO Rev.A data. Unlocked GSM model also available

  5. Treo 750 - Wikipedia

    en.wikipedia.org/wiki/Treo_750

    In the United States the Treo 750 is available with AT&T, or directly from Palm as an unlocked device. It is also available in: Singapore on StarHub and SingTel; Philippines on Globe Telecom; Italy on 3 Italia; Austria on 3 Networks; Netherlands on KPN; Australia on Telstra and 3; Canada on Rogers Wireless; Mexico on Telcel; UK on Vodafone UK ...

  6. Motorola Photon - Wikipedia

    en.wikipedia.org/wiki/Motorola_Photon

    The Photon is an international capable phone ("world phone"), meaning that besides using Sprint's CDMA/EV-DO network and other CDMA networks accessible internationally and through domestic roaming; it accepts a GSM SIM card with quadband GSM and triband UMTS/WCDMA/HSPA+ capabilities.

  7. Cellular frequencies - Wikipedia

    en.wikipedia.org/wiki/Cellular_frequencies

    Many GSM phones support three bands (900/1,800/1,900 MHz or 850/1,800/1,900 MHz) or four bands (850/900/1,800/1,900 MHz), and are usually referred to as tri-band and quad-band phones, or world phones; with such a phone one can travel internationally and use the same handset. This portability is not as extensive with IS-95 phones, however, as IS ...

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