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Smartphone - Wikipedia
The Evolution of The Smartphone - ArcGIS StoryMaps
The 50-year story of cell phones that changed communication
How the cell phone changed lives... by its inventor | TechRadar
Smartphone innovation in the third decade of the 21st century
A history of mobile phones and smartphones - BBC Bitesize
Smartphone History: A Detailed Timeline - CloudContactAI
When Was the First Smartphone Invented? - How-To Geek
A Brief History of the Smartphone - SpringerLink
The surprising ways cellphones have changed our lives - BBC