When.com Web Search

  1. Ads

    related to: gsm world phone

Search results

  1. Results From The WOW.Com Content Network
  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. GSM services - Wikipedia

    en.wikipedia.org/wiki/GSM_services

    GSM is the world's predominant mobile phone standard. The design of the service is moderately complex because it must be able to locate a moving phone anywhere in the world, and accommodate the relatively small battery capacity, limited input/output capabilities, and weak radio transmitters on mobile devices.

  4. 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 ...

  5. Comparison of mobile phone standards - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_mobile_phone...

    Talktime is generally higher in GSM phones due to the pulse nature of transmission. The availability of Subscriber Identity Modules allows users to switch networks and handsets at will, aside from a subsidy lock. GSM covers virtually all parts of the world so international roaming is not a problem.

  6. GSM - Wikipedia

    en.wikipedia.org/wiki/GSM

    Thomas Haug (first GSM president) and Philippe Dupuis (second GSM president) during a GSM meeting in Belgium, April 1992. In 1983, work began to develop a European standard for digital cellular voice telecommunications when the European Conference of Postal and Telecommunications Administrations (CEPT) set up the Groupe Spécial Mobile (GSM) committee and later provided a permanent technical ...

  7. List of mobile network operators - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_network...

    This is a list of the world's five largest satellite phone network operators measured by number of subscribers. ... Proprietary FDMA/GSM: 0.260 (December 2007) [38 ...