Yesterday Apple announced the iPhone SE, a smaller, less-expensive alternative to the iPhone 6s and 6s Plus. The SE's defining feature is the 4-inch display, which helps keep the footprint in check; the design is similar to that of the iPhone 5/5S. The SE runs on the Apple A9 chip with M9 co-processor, same as the iPhone 6s and 6s Plus. The M9 co-processor enables low-energy sensor tracking and always-on "Hey, Siri" functionality. The SE has a 12-megapixel camera with focus pixels, true tone flash, and support for Live Photos. The user-facing camera has a Retina Flash for low-light selfies by flashing the display. The iPhone SE includes a wide range of LTE bands for better international roaming and VoLTE and 802.11ac WiFi for quick local networking. The SE also boasts Touch ID, an NFC radio with Secure Element, and Apple Pay. The SE will cost $399 (16 GB) and $499 (64 GB). Apple will begin accepting preorders for the iPhone SE March 24. The device will reach stores March 31.