iPod Touch

iPod touch

Black 4th generation iPod Touch
Developer	Apple Inc.
Manufacturer	Foxconn
Slogan(s)	"It has fun written all over it."
Generation	1G, 2G, 3G, 4G.
Model	1G: A1213 2G: A1288 3G: A1318 4G: A1367[1]
Part Number	1G: MA623, MA627, MB376 2G: MB525, MB528, MB531, MB533, MC086 3G: MC008, MC011 4G: MC544[2]
Release date	September 8, 2010 (2010-09-08) (current generation) September 5, 2007 (1st generation)
Introductory price	8 GB: $199, 32 GB: $299, 64 GB: $399
Units sold	60 million
Media	Portable media player, PDA, handheld game console, mobile Internet device, digital audio player, e-book reader, camcorder, webcam, digital camera, and mobile phone
Operating system	1G: iOS 3.1.3 2G: iOS 4.2.1 3G: iOS 5.0.1 4G: iOS 5.0.1
Power	3.7 V rechargeable lithium-ion battery, 3.44 Wh, 930 mAh; audio: 40 hours; video: 7 hours[3][4]
CPU	ARM Cortex-A8 Apple A4 1 GHz (underclocked to 800 MHz)
GPU	PowerVR SGX535
Storage capacity	8, 32 and 64 GB Flash memory
Memory	256 MB DRAM[5]
Display	3.5 in (89 mm), 3:2 aspect ratio, 24‑bit color depth, aluminosilicate glass-covered LED-backlit LCD, 960×640 px at 326 ppi
Input	Multi-touch touchscreen display ambient light sensors volume buttons microphone voice control 3-axis accelerometer 3-axis gyroscope
Rear camera	Video recording, 1280×720 up to 30 frames/s with audio, 960×720 still camera with 5× digital zoom, 0.7 MP[6][7]
Front camera	Video recording, VGA up to 30 frames/s with audio, VGA-quality still camera, 0.3 MP
Connectivity	Wi-Fi 802.11b/g/n (802.11n 2.4 GHz only) USB 2.0/Dock connector Bluetooth 2.1 [8]
Hearing aid compatibility	Yes
Online services	App Store, iTunes Store, iBookstore, iCloud
Dimensions	4.4 in (110 mm) × 2.3 in (58 mm) × 0.28 in (7.1 mm) (H×W×D)
Weight	101 g (3.6 oz)
Related articles	iPhone, iPad (List of iOS devices)
Website	www.apple.com/ipodtouch

The iPod Touch (stylized and marketed as lowercase iPod touch; also colloquially referred to as the iTouch,^[9] by analogy to the iPhone) is a portable media player, personal digital assistant, handheld game console, and Wi-Fi mobile device designed and marketed by Apple Inc. The iPod Touch adds the multi-touch graphical user interface to the iPod line. It is the first iPod with wireless access to the iTunes Store, and also has access to Apple's App Store, enabling content to be purchased and downloaded directly on the device. As of March 2011, Apple has sold over 60 million iPod Touch units.^[10][11]

Software

The iPod Touch runs iOS. The first major update after the initial release was iPhone OS 2.0 This update introduced the App Store, which allowed third-party applications for the first time. iPhone OS 2.0 debuted July 11, 2008. iPhone users received the update for free, while iPod Touch users had to pay for the update. The second major update to the operating system, iPhone OS 3.0, was released June 17, 2009. iPhone OS 3.0 added features such as cut, copy, and paste; data tethering; and push notification support. As with the previous major release, iPhone users received the update for free, while iPod Touch users had to pay for the update. iOS 4.0 was made available to the public on June 21, 2010. It was the first major iOS release to drop support for some devices; the first generation iPod Touch and original iPhone are not supported in iOS 4.0. The iPhone 3G and second generation iPod Touch had limited functionality under iOS 4.0, while the iPhone 4, iPhone 3GS, third generation iPod Touch, and fourth generation iPod Touch had full functionality under iOS 4.0. The major features introduced in iOS 4.0 included iBooks, FaceTime, and multitasking. iOS 5.0 was previewed to the public on June 6, 2011, and was released on October 12, 2011.^[12]

Apple has received criticism for charging iPod Touch owners for major iOS updates that iPhone owners receive for free, as well as excluding certain features from the iPod Touch software that are included in the iPhone.^[13][14] Apple has said that they can add features for free to the iPhone because the revenue from it is accounted for on a subscription basis under accounting rules, rather than as a one time payment.^[15] At WWDC in June 2010, Jobs announced that Apple had "found a way" to make subsequent OS upgrades available free to iPod Touch owners. However, iOS 4.0 and onwards isn't available for the first generation iPod Touch, and some features are only available for the 32 GB and 64 GB third generation iPod Touch released in September 2009 and the fourth generation iPod Touch released in 2010.

In June 2011, iOS 5, the fifth major release of iOS software, was announced at Apple's WWDC 2011. There will be added features in the new update, including notifications, messaging and reminders. On October 4, 2011 at Apple's "Let's Talk iPhone" event iOS 5 and the iPhone 4S were announced to the public with many new features such as Siri, iMessage and wireless upgrades; this software upgrade was released on October 12, 2011. No new iPod Touch specific changes were announced, other than a price drop and the option to choose between black and white.^{[citation needed]}

Comparison to the iPhone

Main article: List of iOS devices

See also: iOS and iOS version history

The iPod Touch and the iPhone share essentially the same hardware and run the same iOS operating system. The iPod Touch lacks some of the iPhone's features and associated apps, such as access to cellular networks, GPS navigation and the built-in compass. Older models also lacked speakers and cameras. Although the SMS and Phone apps are included on the iPod Touch software, they are disabled and therefore not visible. Also, the sleep/wake button was on the opposite side, up until the release of the iPod Touch 4th generation. Since it doesn't need GPS and cellular components, the iPod Touch is slimmer and lighter than the iPhone. Steve Jobs once referred to the iPod Touch as "training wheels for the iPhone".^[16]

Another major difference is the quality of the back camera compared to the iPhone. While the iPod Touch, like the iPhone, allows for HD video recording, the iPhone camera still delivers higher quality photos to that of the iPod's.^[17]

Requirements

• iTunes 10 or later
• Mac OS 10.5 or later
• Windows XP Home or Professional with Service Pack 3 or later

Setup/Synchronization

For iPod Touch units bought before October 12, 2011, users must own a Mac or PC computer to be able to use the iPod. Users then must install iTunes and connect the iPod through a USB port. The iPod will then be set up in iTunes. New iPods bought after October 12, 2011 have iOS 5.0 preloaded, and allow activation wirelessly, without the need of a PC or Mac. ^[18]

Earlier iPod Touch units must be plugged into a computer to be synced. This will charge the iPod Touch and sync the music library, videos, pictures and back up data. iOS 5 enables the user to do all this from the device and send it to the iCloud service. It is not manageable by Mac OS X 10.4 Tiger.^[19]

Battery charging

Starting with the second generation, iPod Touch can only be charged from the 5 V pin of the dock connector while most previous iPod models (including the original iPod Touch) could also be charged from the 12 V pin for FireWire power.^[20] This change dropped support for charging in vehicles equipped with a FireWire-based iPod connection. Most aftermarket manufacturers of such equipment offer cables and/or adapters which convert the vehicle's 12 V to 5 V.

Purchasing Content

To purchase content on the iPod Touch, you must create an Apple ID or have an existing account. With this account you may download music and videos from the iTunes Store, apps from the App Store, or books from the iBookstore. An Apple ID account created without a credit card can be used to get free content.

Third-party applications

Earphones with an external microphone and controller are compatible with the 2nd generation iPod Touch, and are shipped with the 3rd generation iPod Touch devices (excluding the 8 GB model).

The only official way to obtain third-party applications for the iPod Touch is Apple's App Store, which is a branch of iTunes Store. The App Store application, available in all versions of iOS from 2.0 onwards, allows users to browse and download applications from a single online repository (hosted by Apple) with the iTunes Store. To develop such software, a software development kit (SDK) was officially announced on March 6, 2008, at an Apple Town Hall meeting.^[21] The iPhone SDK allows developers to make applications for the iPhone and iPod Touch after paying a fee to join the development team. The developer can then set the price for the applications they develop and will receive 70% of money earned. Apple retains 30% of the sale price with no minimum fixed fee.

Hacks

Shortly after the iPhone (then also the iPod Touch) was released, hackers were able to "jailbreak" the device through a TIFF exploit. The application installed by this exploit enabled the user to download a selection of unofficial third-party programs. Jailbreaking the iPod Touch was the only way to get third-party programs when running 1.1.x OSes. These third-party programs could use additional functionality not supported by Apple (such as enabling multitasking, applying themes to the home screen, or enabling a battery percentage indicator). All officially released versions of iOS through 3.1.2 though 4.3.3 with some bugs, can be jailbroken,^[22][23] but version 4.3.1 could not at the time it was released.^[24] Recently, the 4.3.X firmware has been jailbroken untethered by @i0nic. Servicing an iPod Touch after jailbreaking or other modifications made by unofficial means is not covered by Apple's warranty (however, the jailbreaking process is easily undone by performing a restore through iTunes).^[25] Today every firmware of the iPod Touch can be jailbroken from 1.1.1 to 5.0 (Tethered jailbreak on 4.3.4 and 4.3.5 and Semi-tethered on 5.0).^{[citation needed]}

On July 7, 2011, Apple announced that in new versions of the iOS software, a security problem would be fixed. Users who install their own software without Apple's protections can have their information stolen or unwitttingly download malware by clicking on certain PDF files. This discovery of "critical weaknesses" was made by the German Federal Office for Information Security.^[26]

Models

Main articles: List of iOS devices and List of iPod models

Model	Picture	Capacity	RAM	Connection	Original release date	Minimum OS to sync	Rated battery life (hours)
1st generation		8 GB 16 GB 32 GB[27]	128 MB[28]	USB via Dock connector (FireWire for charging only)[20]	September 5, 2007	Mac: 10.4 or later Win: XP, Vista, 7	audio: 22 video: 5
	The first generation iPod Touch was launched on September 5, 2007, at an event called The Beat Goes On.[29] First iPod with Wi-Fi and a Multi-Touch interface. Features Safari web browser and wireless access to the iTunes Store and YouTube. 32 GB and 16 GB versions later added (32 GB in Feb 2008). iPhone OS 2.0 and App Store access require an upgrade fee. iOS 4.0 and later updates of iOS 4.x are no longer supported due to the outdated hardware.
2nd generation		8 GB 16 GB 32 GB[27]	128 MB[28]	USB via Dock connector	September 9, 2008	Mac: 10.4 or later Win: XP, Vista, 7	audio: 36 video: 6
	The second generation iPod Touch featured a new tapered chrome back with Nike+ functionality, volume buttons, and built-in speaker added, It was unveiled on September 9, 2008, at the "Let's Rock" keynote presentation. iPhone OS 2.0 and App Store access standard. Bluetooth support added but not made active until iPhone OS 3.0, which requires an upgrade fee. Support for external microphone and remote added. The 8 GB model was re-introduced alongside the 3rd generation iPod Touch in September 2009, and included the newer iPhone OS 3.1. iOS 4 was released for free for second generation iPod Touch models June 21, 2010, but included a limited selection of features. Future iOS software updates no longer supported (As of iOS 4.2.1). The 2nd generation also comes with the chrome frame seen on the iPhone 3G, making the two almost identical when viewed from the front. However, there are some notable differences, as there is no speaker above the screen, no silent/ringer switch, the back is metal, and the sleep/wake button is on the other side. The 2nd generation also supports audio input when a headphone or earphone with microphone capabilities is plugged into the audio output (headphone) jack. The iPod Touch 2.0 Software Update supports WPA2 Enterprise with 802.1X authentication.[30] The iPhone OS 3.0 update unlocked Bluetooth capability on the 2nd generation iPod Touch, as the included Wi-Fi chip (Broadcom BCM4325) has Bluetooth support.[31][32] The 2nd generation iPod Touch is said to have a yellower cast/tint to the display, as compared to the iPhone or the original iPod Touch.[33] The applications processor inside the 2nd generation iPod Touch runs slightly faster than the processor inside the iPhone 3G, but slower than the iPhone 3GS.[34][35] The first generation iPod Touch works with all "Made for iPod" peripherals, but certain changes that Apple made to the 2nd generation iPod Touch prevent some existing peripherals from recharging the updated player.[36] The Google Street View feature added on iPhone firmware version 2.2 is absent from the same version of firmware released on the iPod Touch,[37] but is found in the 3.0 update. The 2nd and 3rd generation iPod Touch can be updated to iOS 4.x for free, but cannot take advantage of features using the iPhone's camera or GPS receiver. The 2nd generation iPod Touch is further unable to take advantage of iOS 4's multitasking and home screen background customization features, unless the firmware is modified (through jailbreaking), and cannot be upgraded beyond iOS version 4.2.1. Later updates of iOS beyond 4.2.1 are no longer supported due to the outdated hardware. The iPod Touch (2nd generation) is model A1288.
3rd generation		8 GB 32 GB 64 GB[27]	256 MB	USB via Dock connector	September 9, 2009	Mac: 10.4 or later Win: XP, Vista, 7	audio: 30 video: 6
	The 32 GB and 64 GB models were updated to include the upgraded RAM, CPU and GPU internals from the iPhone 3GS; they include Voice Control support, VoiceOver, included iPhone OS version 3.x, and bundled remote earphones with microphone. The 3rd generation iPod Touch with iPhone OS 3.1 was announced and subsequently released on September 9, 2009.[38] Apple's published technical specifications for the 3rd generation iPod Touch only include references to the 32 GB and 64 GB models.[39] Following the introduction of the 3rd generation iPod Touch, Apple also continued offering the 2nd generation 8 GB version, upgraded to the same iPhone OS version as the new 3rd generation devices. The iPod Touch (3rd generation) is model A1318. Apple as well sold many refurbished iPod Touch 2nd generation models with the 3rd generation software effectively making them a 3rd generation unit. These can be identified by software version 4.3.5.
4th generation		8 GB 32 GB 64 GB[27]	256 MB[40]	USB via Dock connector	September 1, 2010	Mac: 10.5 or later Win: XP, Vista, 7	audio: 40 video: 7
	Apple unveiled the 4th generation iPod Touch on September 1, 2010. It features a front-facing camera for FaceTime, the iPhone 4's Retina display without an IPS screen,[41] support for recording 720p video and 960 x 720 still photos via a back camera,[7] Apple's A4 chip, a built-in microphone, and a 3-axis gyroscope. For the appearance note also that the blank display has a significantly darker and more glossy tint than the previous models, as the higher pixel density absorbs a wider spectrum, darkening the reflection.[citation needed] On October 12, 2011, the iPod Touch 4th-generation began shipping with iOS 5.0 pre-installed for PC-free activation. Also, an additional color option, white, was made available.

Specifications

Legend

Discontinued

Current

Model	1st generation	2nd generation	3rd generation	4th generation
Pre-installed OS	iPhone OS 1.1	iPhone OS 2.1.1 iOS 3.1.1 (3G 8 GB MC model)	iPhone OS 3.1.1	iOS 4.1 (2010 release) iOS 5.0 (2011 release)
Highest Supported OS	iPhone OS 3.1.3	iOS 4.2.1	Latest Release of iOS
Display	3.5 in (89 mm); 2:3 aspect ratio, 18-bit color depth, glossy glass-covered LED-backlit LCD screen, 480×320 px (HVGA) at 163 ppi			3.5 in (89 mm); 2:3 aspect ratio; 24-bit color depth, glossy glass-covered LED-backlit LCD, 960x640 px at 326 ppi
System on chip	Samsung S5L8900	Samsung S5L8720	Samsung S5L8920	Apple A4[42] (Samsung S5L8930)
CPU core	620 MHz (underclocked to 412 MHz, originally 400 MHz) ARM 1176JZ(F)-S[43]	620 MHz (underclocked to 533 MHz) ARM 1176JZ(F)-S[43]	833 MHz (underclocked to 600 MHz) ARM Cortex-A8 core[28]	1 GHz (underclocked to 800 MHz) ARM Cortex-A8
GPU core	PowerVR MBX Lite GPU[44][45]		PowerVR SGX535 GPU[46]
Storage	8, 16 and 32 GB		8, 32 and 64 GB	8, 32 and 64 GB
Memory	128 MB DRAM[47]		256 MB DRAM[42][48][5]
Connectivity	Wi-Fi (802.11b/g), USB 2.0/Dock connector	In addition to previous: Bluetooth 2.1 + EDR (requires iPhone OS 3.0), Built-in speaker, Hardware volume controls, Nike+	In addition to previous: Voice Control, Includes earphones with remote and mic	In addition to previous: 802.11n (2.4 GHz only) 3-axis gyroscope Microphone
Cameras	N/A			Back (main): CMOS image sensor with video (720p HD at 30 frames/s); Front: VGA-quality photos and video at up to 30 frames/s.
Audio processor	Wolfson Microelectronics WM8758BG[49]	Cirrus Logic CS4398[citation needed]	Cirrus Logic CS4398[50]	Cirrus Logic
Materials	Glass display, stainless steel back and aluminum bezel; plastic for Wi-Fi antenna	Glass display, contoured stainless steel back and bezel; plastic for Wi-Fi and Bluetooth antenna		Glass display, stainless steel back and bezel
Color	Black only			Black or white
Power	Built-in rechargeable lithium-ion polymer battery[51][52][53]
	3.7 V 2.15 W·h (580 mA·h)[citation needed]	3.7 V 2.73 W·h (739 mA·h)[52][54]	3.7 V 2.92 W·h (789 mA·h)[53]	3.7 V 3.44 W·h (930 mA·h)
Rated battery life (hours)	audio: 22 video: 5	audio: 36 video: 6	audio: 30 video: 6	audio: 40 video: 7
Dimensions	110 × 61.8 × 8 mm (4.3 × 2.4 × 0.31 in)	110 × 61.8 × 8.5 mm (4.3 × 2.4 × 0.33 in)		111 × 58.9 × 7.2 mm (4.4 × 2.3 × 0.28 in)
Weight	120 g (4.2 oz)	115 g (4.05 oz)		101 g (3.6 oz)
Released	8 and 16 GB: September 14, 2007 32 GB: February 5, 2008	September 9, 2008	September 9, 2009	Black: September 8, 2010 White: October 12, 2011
Discontinued Status	September 9, 2008	16 and 32 GB: September 9, 2009 8 GB: September 1, 2010	September 12, 2010	Current

See also

• Comparison of iPod managers
• Comparison of portable media players
• List of portable media players with Wi-Fi connectivity
• List of iOS devices

References

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51. ^ "iPod Touch 1st Generation Teardown – Page 2". iFixit. http://www.ifixit.com/Teardown/iPod-Touch-1st-Generation/596/2. Retrieved October 4, 2009. 
52. ^ ^{a b} "iPod Touch 2nd Generation Teardown – Page 2". iFixit. http://www.ifixit.com/Teardown/iPod-Touch-2nd-Generation/586/2. Retrieved October 4, 2009. 
53. ^ ^{a b} "iPod touch 3rd Generation Teardown – Page 2". iFixit. http://www.ifixit.com/Teardown/iPod-touch-3rd-Generation/1158/2. Retrieved October 4, 2009. 
54. ^ "IECEE – Public information. Model: 616-0404 DAP284864PA". IEC. http://certificates.iecee.org/cbtestcert/cbtestcert.nsf/NCBPUB/0abf13f1341397b0c12574ab0023f32e. Retrieved 31-08-2011. 

External links

Apple Inc. portal

• Official website
• Technical Specifications (all models)