CHAPTER 1 AN ALL-IN-ONE DEVICE A soccer coach snaps a team photo and shares it on social media Then she texts the players their new schedule She can do all this with just a smartphone Smartphones are cell phones with computers inside Early cell phones used analog signals to copy sound vibrations They could only send voice messages Smartphones can make calls send messages connect to the Internet and more 5
In the early cell phones began using digital signals This allowed the phones to send text as well as sound making them the first smartphones Early smartphones had simple black-and-white graphics Users chose options with a keypad or stylus Later smartphones had cameras They could send pictures and images too In Apple released the iPhone The iPhone combined the features of a phone web browser music player and CRITICAL THINKING CRITICAL THINKING CRITICAL THINKING How did the change from analog to digital affect the How did the change from analog to digital affect the How did the change from analog to digital affect the development of smartphones development of smartphones development of smartphones 6
Motorola introduced this smartphone in camera It also had a finger-operated touchscreen Smartphones continued to improve through the years New apps allowed users to play games surf the web and much more 7
