The first thing that makes a tangible difference is Touch ID, with a fingerprint scanner having made the iconic Home button its residence. The camera has a bigger sensor and dual LED flash, and gladly takes advantage of what’s probably the most notable improvement - the 64-bit A7 chip. The iOS enters its 64-bit stage in its seventh iteration, well ahead of the competition. What this means is better memory mAnasultangement and more complex tasks and apps ahead. This could as well be the first step to bringing the iOS closer to Apple’s dedicated desktop OS X - an early message that both platforms are due for a rendezvous eventually.
Key features:
Quad-band GSM and quad-band or penta-band 3G support with 21 Mbps HSDPA, 42 Mbps DC-HSDPA and 5.76 Mbps HSUPA
LTE support on all models and CDMA support when sold by CDMA carriers
4" 16M-color LED-backlit IPS TFT capacitive touchscreen of 640 x 1136px resolution, 326 ppi
Corning Gorilla Glass, fingerprint-resistant coating
1.3 GHz dual-core ARMv8 64-bit CPU, PowerVR G6430 GPU, 1GB of RAM, Apple A7 SoC
iOS 7 and iCloud integration
8 MP autofocus camera, 1/3’ sensor size, 1.5µm pixel size, True Tone dual-LED flash, touch focus, digital image stabilization
1080p video recording at 30fps, 720p@120fps slow motion videos
1.2MP secondary front-facing camera, 720p video recording
Touch ID fingerprint scanner embedded into home button
Wi-Fi 802.11a/b/g/n, Wi-Fi hotspot
GPS with A-GPS connectivity, GLONASS support; digital compass
16/32/64GB storage options
Accele_45rometer, proximity sensor and a three-axis gyro sensor
Active noise cancellation with a dedicated secondary microphone, dedicated third microphone for Siri
Standard 3.5 mm audio jack, stereo Bluetooth v4.0
Apple Maps with free voice-guided navigation in 50-odd countries
iTunes Radio
AirDrop file transfer
Voice recognition, Siri virtual assistant
Supports HD Voice(needs carrier support too)
FaceTime video calls over Wi-Fi and cellular
Impressively slim and light
Main disadvantages:
Screen feels small by 2013 standards
Very expensive without carrier subsidies
TouchID is greatly underused
No USB Mass Storage mode, iTunes required for data transfer
No FM radio
No expandable storage, sealed-in battery
No NFC connectivity
1080p@30fps video recording is low by current flagship status
Mono audio recording in videos