1/3inch sensor size, 1.5? pixel size, geo-tagging, simultaneous HD video and image recording, touch focus, face/smile/blink detection, panorama, HDR panorama, HDR photo
Video 1080p@60fps, 720p@240fps, optical image stabilization
1.2 MP, 720p@30fps, face detection, FaceTime over Wi-Fi or Cellular
Active noise cancellation with dedicated mic
AirDrop file sharing
Siri natural language commands and dictation
iCloud cloud service
iCloud Keychain
Twitter and Facebook integration
TV-out
Maps
iBooks PDF reader
Audio/video player/editor
Organizer
Document viewer/editor
Photo viewer/editor
Voice memo/dial/command
Predictive text input