The iPhone 4 is a touchscreen smartphone developed by Apple Inc. It is the fourth generation iPhone, and successor to the iPhone 3GS. It is particularly marketed for video calling (marketed by Apple as FaceTime), consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail access. It was announced on June 7, 2010, at the WWDC 2010 held at the Moscone Center, San Francisco,[8] and was released on June 24, 2010, in the United States, the United Kingdom, France, Germany and Japan.
The iPhone 4 runs Apple's iOS operating system, the same operating system as used on previous iPhones, the iPad, and the iPod Touch. It is primarily controlled by a user's fingertips on the multi-touch display, which is sensitive to fingertip contact.
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Size and weight
Height:
115.2 mm (4.5 inches)
Width:
58.6 mm (2.31 inches)
Depth:
9.3 mm (0.37 inches)
Weight:
137 grams (4.8 ounces)
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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
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Display
§ Retina display
§ 3.5-inch (diagonal) widescreen Multi-Touch display
§ 960x640-pixel resolution at 326 ppi
§ 800:1 contrast ratio (typical)
§ Fingerprint-resistant oleophobic coating front and back
§ Support for display of multiple languages and characters simultaneously
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TV and video
§ Video formats supported: H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160Kbps, 48kHz, stereo audio in .m4v, .mp4 and .mov file formats; MPEG-4 video, up to 2.5Mbps, 640x480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160Kbps, 48kHz, stereo audio in .m4v, .mp4 and .mov file formats; Motion JPEG (M-JPEG) up to 35Mbps, 1280x720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format
§ Support for 1024x768 pixels with Apple VGA Adapter; 576p and 480p with Apple Component AV Cable; 576i and 480i with Apple Composite AV Cable
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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
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Mac system requirements
§ Mac computer with USB 2.0 port
§ Mac OS X v10.5.8 or later
§ iTunes 9.2 or later (free download from www.itunes.com/in/download)
§ iTunes Store account
§ Internet access
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Rating for Hearing Aids
§ 3G network - 850/1900MHz: M4, T4
§ 2G network - 850MHz: M3, T3
§ 2G network - 1900MHz: M2, T3
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Headphones
§ Stereo earphones with built-in microphone
§ Frequency response: 20Hz to 20,000Hz
§ Impedance: 32 ohms
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Mobile and wireless
§ UMTS/HSDPA/HSUPA (850, 900, 1900, 2100MHz)
§ GSM/EDGE (850, 900, 1800, 1900MHz)
§ Wi-Fi 802.11b/g/n (802.11n 2.4GHz only)
§ Bluetooth 2.1 + EDR wireless technology
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Power and battery
§ Built-in rechargeable lithium-ion battery
§ Charging via USB to computer system or power adapter
§ Talk time:
up to 7 hours on 3G
up to 14 hours on 2G
§ Standby time: up to 300 hours
§ Internet use:
up to 6 hours on 3G
up to 10 hours on Wi-Fi
§ Video playback: up to 10 hours
§ Audio playback: up to 40 hours
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Capacity
§ 16GB or 32GB flash drive
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Location
§ Assisted GPS
§ Digital compass
§ Wi-Fi
§ Mobile
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