Take the first step toward adventure. Visit to keep dry and light on your feet with the waterproof Vessi Sneakers. Covered with a 1-year warranty and 30-day worry-free returns. Explore confidently and enjoy 15% off your first pair at checkout! - - - - Curious about antennas and how cell phones work, check out these videos: • How Does an Antenna Work? and • How Cell Service Actually Works: How the iPhone 4 Uses new RF filters to pickup more cellular bands: Technical Sources: • Antenna Theory: • Antenna Design for Modern Mobile Phones: A Review: • Textbook: Antenna Design for Mobile Devices by Zhijun Zhang --- Timecodes 0:00 When Antennas Go Wrong 1:40 Why The First Cell Phone NEEDED a Big Antenna 3:28 Motorola's Disappearing Antenna Trick 7:19 Too Many People Love Cell Phones 10:51 Look Ma, No Antenna - Nokia 3210 13:26 Making Phones Cool and Thin - Razr V3 15:25 Moving the Antenna Outside Again - iPhone 4