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http://en.wikipedia.org/wiki/Second_World_Warhttp://en.wikipedia.org/wiki/Radiophonehttp://en.wikipedia.org/wiki/GSM_serviceshttp://en.wikipedia.org/wiki/Mobile_phonehttp://en.wikipedia.org/wiki/Mobile_phonehttp://en.wikipedia.org/wiki/Mobile_telephony7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/MTD_(mobile_network)7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/File:Portablecellphone_1970's.jpghttp://en.wikipedia.org/wiki/0Ghttp://en.wikipedia.org/wiki/Finlandhttp://en.wikipedia.org/wiki/Autoradiopuhelin7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/File:Transmitting_tower_top_us.jpghttp://en.wikipedia.org/wiki/Handoffhttp://en.wikipedia.org/wiki/Swedenhttp://en.wikipedia.org/wiki/Norwayhttp://en.wikipedia.org/wiki/Finlandhttp://en.wikipedia.org/wiki/Denmarkhttp://en.wikipedia.org/wiki/Nordic_Mobile_Telephonehttp://en.wikipedia.org/wiki/Nordic_Mobile_Telephonehttp://en.wikipedia.org/wiki/Nippon_Telegraph_and_Telephonehttp://en.wikipedia.org/wiki/1G7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/File:DynaTAC8000X.jpghttp://en.wikipedia.org/wiki/Motorola_DynaTAChttp://en.wikipedia.org/wiki/Motorola_DynaTAChttp://en.wikipedia.org/wiki/United_Stateshttp://en.wikipedia.org/wiki/Roaminghttp://en.wikipedia.org/wiki/Nordic_Mobile_Telephonehttp://en.wikipedia.org/wiki/Nordic_Mobile_Telephone7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/File:Mobile_phone_PHS_Japan_1997-2003.jpg7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/Circuit_switchinghttp://en.wikipedia.org/wiki/Packet_switching7/31/2019 Presentation on Nature
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http://en.wikipedia.org/wiki/VoIPhttp://en.wikipedia.org/wiki/WANhttp://en.wikipedia.org/wiki/LANhttp://en.wikipedia.org/wiki/Internethttp://en.wikipedia.org/wiki/Circuit_switchinghttp://en.wikipedia.org/wiki/TeliaSonerahttp://en.wikipedia.org/wiki/3GPP_Long_Term_Evolutionhttp://en.wikipedia.org/wiki/Sprinthttp://en.wikipedia.org/wiki/WiMAX7/31/2019 Presentation on Nature
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