| OS | iOS 9, upgradable to iOS 9.3.3 & planned upgrade to iOS 10 |
| Chipset | Apple A9 |
| CPU | 1.84 GHz Dual-Core Twister |
| GPU | PowerVR GT7600 (six-core graphics) |
| 2G | Yes |
| 3G | Yes |
| 4G | Yes |
| Dimensions | 158.1 x 77.8 x 7.1 mm |
| Weight | 192 g |
| SIM | Nano-SIM |
| Colors | Space Gray, Silver, Gold, Rose Gold |
| Technology | LED-backlit IPS LCD, capacitive touchscreen, 16M colors |
| Size | 5.5 inches |
| Resolution | 1080 x 1920 pixels (~401 ppi pixel density) |
| Multitouch | Yes |
| Built-in | 64GB |
| Card | No |
| RAM | 2GB |
| Back | 12 MP, autofocus, dual-LED + dual tone flash |
| Front | 5 MP, f/2.2, 31mm, face detection, HDR, panorama |
| Video | 2160p@30fps, 1080p@60fps, 1080p@120fps, 720p@240fps |
| Features | F/2.2, 29mm, phase detection, OIS, 1/3" sensor size, 1.22 µm pixel size, geo-tagging, simultaneous 4K video and 8MP image recording, touch focus, face/smile detection, HDR (photo/panorama) |
| Bluetooth | v4.2 with A2DP, LE |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot |
| GPS | Yes + A-GPS support & Glonass |
| Radio | No |
| USB | v2.0, reversible connector |
| NFC | Yes |
| Data | GPRS, EDGE, 3G (HSPA 42.2/5.76 Mbps, 4G (LTE Cat6 300/50 Mbps, EV-DO Rev.A 3.1 Mbps) |
| Alert types | Vibration, proprietary ringtones |
| Loudspeaker | Yes |
| 3.5mm jack | Yes |
| Capacity | 2750 mAh |
| Standby | up to 384 hrs |
| Talktime | up to 24 hrs |
| Removable | No |
| Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer |
| Browser | HTML5 (Safari) |
| Messaging | iMessage, SMS (threaded view), MMS, Email, Push Email |
| Torch | Yes |
| Games | Downloadable |
| Java | No |
| Extra | Active noise cancellation with dedicated mic, iCloud cloud service, Document editor, Siri natural language commands and dictation, Photo/video editor, Google Maps, Apple Pay (Visa, MasterCard, AMEX certified), Voice memo/command/dial, Audio/video player a |