| OS | iOS 9.3 |
| Chipset | Apple A9 |
| CPU | 1.84 GHz Dual-Core Twister |
| GPU | PowerVR GT7600 |
| 2G | Yes |
| 3G | Yes |
| 4G | Yes |
| Dimensions | 123.8 x 58.6 x 7.6 mm |
| Weight | 113 g |
| SIM | Nano-SIM |
| Colors | Space Gray, Silver, Gold, Rose Gold |
| Technology | LED-backlit IPS LCD, capacitive touchscreen, 16M colors |
| Size | 4.0 inches |
| Resolution | 640 x 1136 pixels (~326 ppi pixel density) |
| Multitouch | Yes |
| Built-in | 16/64GB |
| Card | No |
| RAM | 2GB |
| Phonebook | Yes |
| Call records | Yes |
| Back | 12 MP, autofocus, dual-LED (dual tone) flash |
| Front | 1.2 MP Camera, f/2.4, 31mm, 720p@30fps, face detection, HDR, FaceTime over Wi-Fi or Cellular |
| Video | 2160p@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps |
| Features | 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, hotspot |
| GPS | Yes + A-GPS support & Glonass |
| Radio | No |
| USB | v2.0, reversible connector |
| NFC | Yes (Apple Pay only) |
| Data | GPRS, EDGE, 3G HSPA, 4G (LTE Cat4 150/50 Mbps) |
| Alert types | Vibration, proprietary ringtones |
| Loudspeaker | Yes |
| 3.5mm jack | Yes |
| Capacity | 1642 mah |
| Standby | up to 240 hrs |
| Talktime | up to 14 hrs |
| Removable | Non-removable |
| Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass |
| Browser | HTML (Safari) |
| Messaging | iMessage, SMS (threaded view), MMS, Email, Push Email |
| Torch | Yes |
| Games | built-in + downloadable |
| Java | No |
| Extra | Apple Pay (Visa, MasterCard, AMEX certified), Active noise cancellation with dedicated mic, iCloud service, Siri natural language commands and dictation, Google Maps, Voice memo/command/dial, Audio/video player and editor, TV-out, Twitter and Facebook int |