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CollectedbyesfuncGSMFromWikipedia,thefreeencyclopediaJumpto:HYPERLINK"http://en.wikipedia.org/wiki/GSM"\l"mw-head"navigation,HYPERLINK"http://en.wikipedia.org/wiki/GSM"\l"p-search"searchForotheruses,seeHYPERLINK"http://en.wikipedia.org/wiki/GSM_(disambiguation)"\o"GSM(disambiguation)"GSM(disambiguation).TheGSMlogoisusedtoidentifycompatiblehandsetsandequipmentGSM(GlobalSystemforMobileCommunications:originallyfromGroupeSpécialMobile)isthemostpopularHYPERLINK"http://en.wikipedia.org/wiki/Comparison_of_mobile_phone_standards"\o"Comparisonofmobilephonestandards"standardforHYPERLINK"http://en.wikipedia.org/wiki/Mobile_telephony"\o"Mobiletelephony"mobiletelephonysystemsintheworld.TheHYPERLINK"http://en.wikipedia.org/wiki/GSM_Association"\o"GSMAssociation"GSMAssociation,itspromotingindustrytradeorganizationofmobilephonecarriersandmanufacturers,estimatesthat80%oftheglobalmobilemarketusesthestandard.HYPERLINK"http://en.wikipedia.org/wiki/GSM"\l"cite_note-0"[1]GSMisusedbyover1.5HYPERLINK"http://en.wikipedia.org/wiki/1000000000_(number)"\o"1000000000(number)"billionpeopleHYPERLINK"http://en.wikipedia.org/wiki/GSM"\l"cite_note-1"[2]acrossmorethan212countriesandterritories.HYPERLINK"http://en.wikipedia.org/wiki/GSM"\l"cite_note-2"[3]Thisubiquitymeansthatsubscriberscanusetheirphonesthroughouttheworld,enabledbyinternationalHYPERLINK"http://en.wikipedia.org/wiki/Roaming"\o"Roaming"roamingarrangementsbetweenHYPERLINK"http://en.wikipedia.org/wiki/Mobile_network_operator"\o"Mobilenetworkoperator"mobilenetworkoperators.GSMdiffersfromitspredecessortechnologiesinthatbothsignalingandspeechchannelsareHYPERLINK"http://en.wikipedia.org/wiki/Digital"\o"Digital"digital,andthusGSMisconsideredasecondgeneration(HYPERLINK"http://en.wikipedia.org/wiki/2G"\o"2G"2G)mobilephonesystem.Thisalsofacilitatesthewide-spreadimplementationofdatacommunicationapplicationsintothesystem.TheGSMstandardhasbeenanadvantagetobothconsumers,whomaybenefitfromtheabilitytoro
