Design
- Excellent build quality, with Apple's famed attention to detail
- Beautiful design with premium choice of materials (unibody aluminium frame), solid construction, and iconic looks
- Super slim
- Still relatively compact and easy to grasp compared to flagship phones of other brands
- Rounded sides, make it more comfortable to hold than for instance the chamfered beveled edge of the iPhone 5S
- The Health app is the most extensive health based app to date, that can pick data from both internal sensors, and 3rd party peripherals, and acts as a centralized hub for all of the user's health stats, including anything from their activity, weight, and heart rate, to blood pressure, blood glucose, and vitamin intake - all this data is also easily shareable with your doctor
- Enhanced keyboard functionality with QuickType word prediction
- The Touch ID biometric touch sensor is the best, most accurate, most responsive fingerprint sensor around
Display
- Brilliant display with potent brightness, wide viewing angles, and superb color accuracy
- Screen resolution could have been higher
Software
- "Hey, Siri" trigger for Siri voice commands
Performance
- Buttery smooth, slick performance all-round, and even with graphics intensive mobile games
- Improved multitasking menu which now also has recent contacts
Camera
- Stunning camera with simple usability, instant focus, tons of new features, and as usual, amazing picture/video quality
- Simple, effective image editing
- Lacks the optical image stabilization of the bigger, more expensive 6 Plus
Audio
- With its bigger & sharper display, powerful speaker, and snappy performance, the iPhone 6 enthralls when it comes to consuming multimedia content
- Good call quality
Battery
- Decent battery life
More
- iOS 8 is beautiful and simple and brings in tons of functionality upgrades
- Better spotlight search which now also has wikipedia, itunes and other results
- Support for 3rd party keyboards
- Buttery smooth web browser
- Support for VoLTE - voice over LTE, to provide wideband high-quality calls, where network supported
- NFC and Apple Pay have the potential to revolutionize mobile payments