Pocket-sized Marvels: How Your Mobile Phone Came To Be! What was the first commercially available mobile phone, often referred to as the "brick phone"? Motorola StarTAC Nokia 3310 Motorola DynaTAC 8000X BlackBerry 850 None Which mobile phone introduced the concept of a physical QWERTY keyboard, becoming popular among business professionals? iPhone BlackBerry Nokia Communicator Palm Treo None The launch of which mobile operating system marked the beginning of the era of smartphones with touchscreens? Windows Mobile Symbian iOS Android None What feature distinguishes a "slider phone," a design popular in the mid-2000s, from other mobile phone designs? Dual cameras Rotating screen Sliding physical keyboard Foldable display None The term "phablet" is a portmanteau of "phone" and "tablet" and refers to a mobile device with a screen size typically between: 3 and 4 inches 4 and 5 inches 5 and 6 inches 6 and 7 inches None Time's up Most Popular Most Popular