The iPhone 14 models come in 6.1 and 6.7-inch sizes (iPhone 14 Plus) and feature flat edges, an aluminum enclosure, and a glass back for wireless charging. They are powered by the A15 chip with improved thermal design, offering a 6-core CPU, 5-core GPU, and 16-core Neural Engine. Notably, they include a dual-core accelerometer for Crash Detection, which can contact emergency services during serious accidents, utilizing various sensors like a barometer, GPS, and microphone for enhanced safety.