Martin Cooper invented the first cell phone in 1973 while working for Motorola, though it was not introduced to the public until 1977. Early cell phones were primarily designed as car phones installed in vehicles. Cell phones grew rapidly in popularity during the 1980s as the technology advanced. Modern cell phones are touchscreen, slide, keyboard or flip designs and can perform most functions of computers, allowing activities like messaging, games, photos, videos, internet and more. Major phone brands include iPhone, Blackberry, Samsung Galaxy, and Motorola Droid.