Size and weight Height:

• 4.5 inches (115.2 mm)
• Width: 2.31 inches (58.6 mm)
• Depth: 0.37 inch (9.3 mm)
• Weight: 4.8 ounces (137 grams)

Cellular and wireless

• GSM model: UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz); 
• GSM/EDGE (850, 900, 1800, 1900 MHz) CDMA model: 
• CDMA EV-DO Rev. A (800, 1900 MHz) 802.11b/g/n 
• Wi-Fi (802.11n 2.4GHz only) 
• Bluetooth 2.1 + EDR wireless technology

Display

• Retina display
• 3.5-inch (diagonal) widescreen Multi-Touch display
• 960-by-640-pixel resolution at 326 ppi
• 800:1 contrast ratio (typical)
• 500 cd/m2 max brightness (typical)
• Fingerprint-resistant oleophobic coating on front and back
• Support for display of multiple languages and characters simultaneously

Audio playback

• Frequency response: 20Hz to 20,000Hz
• Audio formats supported: AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV
• User-configurable maximum volume limit

Camera, photos, and video

• Video recording, HD (720p) up to 30 frames per second with audio
• 5-megapixel still camera
• VGA-quality photos and video at up to 30 frames per second with the front camera
• Tap to focus video or still images
• LED flash
• Photo and video geotagging

Sensors

• Three-axis gyro
• Accelerometer
• Proximity sensor
• Ambient light sensor

Connectors and input/output

• 30-pin dock connector
• 3.5-mm stereo headphone minijack
• Built-in speaker
• Microphone