Engineering:iPod Touch

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Short description: Series of mobile devices by Apple (2007–2022)

iPod Touch
IPodtouchlogo.svg
Pink iPod touch 6th generation.svg
iPod Touch 6th/7th generation in Pink
DeveloperApple Inc.
ManufacturerFoxconn
Product familyiPod
TypeMobile device
DiscontinuedMay 10, 2022; 2 years ago (2022-05-10)[1]
Units sold100 million (as of May 2013)[2]
Operating systemiOS
Storage
  • 1st gen & 2nd gen: 8, 16 & 32 GB[lower-alpha 1] flash memory[3]
  • 3rd gen: 8, 32 & 64 GB flash memory[3]
  • 4th gen: 8, 16, 32 & 64 GB flash memory[3]
  • 5th gen: 16, 32 & 64 GB flash memory[3]
  • 6th gen: 16, 32, 64 & 128 GB flash memory[3]
  • 7th gen: 32, 128 & 256 GB flash memory[3]
Input
Online services
PredecessoriPod Classic
Related articlesiPod Nano
iPod Classic
iPod Shuffle
iPhone
List of iOS devices
Websitewww.apple.com/ipod-touch/

The iPod Touch (stylized as iPod touch) is a discontinued line of iOS-based mobile devices designed and marketed by Apple Inc. with a touchscreen-controlled user interface. As with other iPod models, the iPod Touch can be used as a portable media player and a handheld gaming device, but can also be used as a digital camera, a web browser, for email and messaging.[4] It is nearly identical in design to the iPhone, and can run most iPhone third-party apps from the App Store, but it connects to the internet only through Wi-Fi and uses no cellular network data since it lacks a cellular modem.

The iPod Touch was introduced in September 2007, and around 100 million units were sold by May 2013.[2] The final iPod Touch model, released on May 28, 2019, is the seventh-generation model.

iPod Touch models were distinguished by storage space and color; all models of the same generation typically offered identical features, performance, and operating system upgrades. An exception is the fifth generation, in which the low-end (16 GB)[lower-alpha 1] model was initially sold without a rear-facing camera and in a single color.[5]

The iPod Touch was the last product in Apple's iPod product line after the discontinuation of the iPod Nano and iPod Shuffle on July 27, 2017, after which Apple revised the storage and pricing for the iPod Touch with 32 and 128 GB of storage.[6] On May 10, 2022, Apple discontinued the iPod Touch, effectively ending the iPod product line.[7] iOS 15 is the last iOS version to support the seventh-generation iPod Touch, except for ongoing OS maintenance.[8]

Features

Software

The iPod Touch ran on iOS, the same operating system as the iPhone. It included Safari, Google Maps, a Mail app, apps for Music and Videos, and several more. Users type on a virtual keyboard displayed on the screen. Apple operates online stores, allowing users to buy and directly download music, videos and third-party software. From launch, the iPod Touch was described by journalists as an "iPhone without the phone,"[9] and each succeeding iPod Touch model was introduced with the same release of iOS as the contemporary iPhone model.

In June 2011, iOS 5, the fifth major release of iOS software, was announced at Apple's WWDC 2011, adding notification, messaging, and reminder features.[10] Apple limited some features, such as the voice control system Siri, to the iPhone.[11] iOS 6, which was released on September 19, 2012, for the fourth- and fifth-generation iPod Touch models, contains 200 new features including Passbook, Facebook integration and Apple Maps. The fifth-generation iPod Touch gained the ability to take panoramic photos, a feature shared with the iPhone 4S and iPhone 5.[12]

On June 8, 2015, it was announced at the WWDC that the fifth-generation iPod Touch would support iOS 9, along with other A5 chip devices, becoming the first iPod Touch to support four major versions of iOS.

iOS updates to iPod Touch models prior to iOS 4 were required to be purchased by their owners. Apple received criticism for this decision and for excluding certain iPhone features from the iPod Touch software.[13][14] Apple's position was that they could add features for free to the iPhone because it realizes revenue via subscription, rather than as a one-time payment (as iPhones were typically sold with a carrier contract).[15] At WWDC in June 2010, as of iOS 4, Steve Jobs announced that Apple had "found a way" to make subsequent OS upgrades available free to iPod Touch owners.

Setup and synchronization

iPod Touch units running iOS 4 or earlier were required to be connected to a Mac or PC for first-time setup. Downloading apps or media from the iTunes Store and App Store does not require a computer, though media not purchased through the iTunes Store still has to be added through a computer.

iPod Touch units produced since October 12, 2011, have iOS 5.0 or later preloaded, and can be set up wirelessly,[16] without the need of a PC or Mac.

Purchasing content

To purchase content on the iPod Touch, the user must create an Apple ID or have an existing account. With this account one may download music and videos from the iTunes Store, apps from the App Store, or books from the Apple Books Store. An Apple ID account created without a credit card can be used to get free content, and gift cards can be used to pay for apps instead of using a credit card.

Third-party applications

The only official way to obtain third-party applications for the iPod Touch is through 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.

Sideloading apps outside the App Store is done through the Xcode application, and is intended for developers and enterprises, though tools for sideloading outside of Xcode exist, and are mainly used for applications not allowed in the App Store.

Design and hardware

The iPod Touch is generally similar to the iPhone models prior to the iPhone X (excluding the second- and third-generation iPhone SE). Compared to a same-generation iPhone, an iPod Touch is thinner, lighter, and less expensive, while lacking some hardware and software features. Steve Jobs once referred to the iPod Touch as "training wheels for the iPhone."[17]

All iPod Touch models lack biometric authentication, 3D Touch, NFC, GPS, an earpiece speaker, and a noise-cancelling microphone. Depending on the generation, the iPod Touch may have a smaller or otherwise inferior display and camera(s). Newer models (fifth, sixth, and seventh generation) lack the ambient light sensor that makes automatic brightness available. The first-generation iPod Touch lacks a built-in speaker, and all iPod Touches prior to the fourth generation lack a microphone, a camera, and a flash. Starting with the 4th generation iPod Touch, a camera and microphone were added, and starting with the fifth-generation iPod Touch, an LED flash was added.

The iPod Touch has no cellular modem, and therefore cannot directly make phone calls on the public switched telephone network. However, it can make VoIP calls such as FaceTime, and send iMessages to other iPhones, Macs, iPads, and iPod Touch models with an Apple ID. The fifth-generation iPod Touch and later can forward and receive standard phone calls through a separate iPhone (a feature introduced in iOS 8), with the Wi-Fi Calling feature. The two devices must be linked to the same Apple ID, and the iPhone's carrier must support this feature.[18]

Connectivity

Apple Lightning connector

The iPod Touch can communicate with a computer through Wi-Fi or USB using a cable and a dock connector.

iPod models released before 2012 feature a 30-pin dock connector (known colloquially as the iPod dock connector), which carried analog signals.

The fifth, sixth, and seventh generations of the iPod Touch feature a new digital dock connector, called Lightning, which was introduced alongside the iPhone 5, fourth-generation iPad and first-generation iPad Mini, and the seventh-generation iPod Nano models. This new connector is smaller than the previous one allowing for a slimmer form factor, and is reversible. Various accessories are available to connect the Apple Lightning connector to the older 30-pin dock connector or USB,[19] although not all old accessories will work, because the Lightning connector cannot handle analog signals.[20]

User-made modifications

Like all of Apple's iOS devices, the iPod Touch is a tightly controlled or closed platform. Communication between apps is limited and controlled, and Apple is the only authorized software vendor for firmware and applications. Hackers have attempted to "jailbreak" all iOS devices to enable forbidden or unsupported features, such as multitasking in iOS versions before 4.0, themes for the home screen, and enabling the battery-percentage indicator (limited to the iPhone prior to the seventh-generation iPod Touch). Jailbreaks for the iPod Touch first surfaced a month after the original model was released in September 2007, when hackers released JailbreakMe 1.0 (also called "AppSnapp") to jailbreak iPhone OS 1.1.1.[21][22] This allowed users to install third-party programs on their devices before Apple permitted this with iPhone OS 2.

Apple's warranty statement implies that an iPod Touch after jailbreaking or other modification made by unofficial means is not covered by Apple's warranty. Jailbreaking is a violation of the terms and conditions for using iOS. While the jailbreaking process can normally be undone by performing a restore through iTunes,[23] there is a risk of rendering the device unusable.

Models

Obsolete[24] Vintage   Discontinued and unsupported   Unsupported
Model Announced Released Discontinued Unsupported Months supported to date Months supported after discontinuation to date
iPod Touch
(1st generation)
September 5, 2007 (2007-09-05) September 5, 2007; 16 years ago (2007-09-05) September 9, 2008; 15 years ago (2008-09-09) June 21, 2010; 14 years ago (2010-06-21) Template:Age in months months Template:Age in months months
iPod Touch
(2nd generation)
September 9, 2008 (2008-09-09) September 9, 2008; 15 years ago (2008-09-09)
September 9, 2009; 14 years ago (2009-09-09) (MC model)
September 9, 2009; 14 years ago (2009-09-09)
September 1, 2010; 13 years ago (2010-09-01) (MC model)
March 9, 2011; 13 years ago (2011-03-09) Template:Age in months months
Template:Age in months months (MC model)
Template:Age in months months
Template:Age in months months (MC model)
iPod Touch
(3rd generation)
September 9, 2009 (2009-09-09) September 9, 2009; 14 years ago (2009-09-09) September 1, 2010; 13 years ago (2010-09-01) September 19, 2012; 11 years ago (2012-09-19) Template:Age in months months Template:Age in months months
iPod Touch
(4th generation)
September 1, 2010 (2010-09-01) September 1, 2010; 13 years ago (2010-09-01) May 30, 2013; 11 years ago (2013-05-30) February 21, 2014; 10 years ago (2014-02-21) Template:Age in months months Template:Age in months months
iPod Touch
(5th generation)
September 12, 2012 (2012-09-12) October 11, 2012; 11 years ago (2012-10-11)
May 30, 2013; 11 years ago (2013-05-30) (16 GB; Mid 2013)
July 15, 2015; 8 years ago (2015-07-15)
June 26, 2014; 10 years ago (2014-06-26) (16 GB; Mid 2013)
September 13, 2016; 7 years ago (2016-09-13) Template:Age in months months
Template:Age in months months (16 GB; Mid 2013)
Template:Age in months months
Template:Age in months months (MC model)
iPod Touch
(6th generation)
July 15, 2015 (2015-07-15) July 15, 2015; 8 years ago (2015-07-15) May 28, 2019; 5 years ago (2019-05-28) January 23, 2023; 17 months ago (2023-01-23) Template:Age in months months Template:Age in months months
iPod Touch
(7th generation)
May 28, 2019 (2019-05-28) May 28, 2019; 5 years ago (2019-05-28) May 10, 2022; 2 years ago (2022-05-10) supported (bug fixes only) Template:Age in months months Template:Age in months months
Model iPod Touch
(7th generation)
iPod Touch
(6th generation)
iPod Touch
(5th generation)
16 GB, Mid 2013
iPod Touch
(5th generation)

iPod Touch
(4th generation)

iPod Touch
(3rd generation)

iPod Touch
(2nd generation)
iPod Touch
(1st generation)
Picture Pink iPod touch 6th generation.svg 5th Generation iPod Touch.svg Blue iPod touch 5th Generation.png 4th Generation iPod touch.png IPod Touch 2G.svg IPod touch 1st generation.png
Initial release operating system iOS 12.3.1 iOS 8.4 iOS 6.1.3 iOS 6.0 iOS 4.1 (Black model)
iOS 5.0 (White model)
iPhone OS 3.1.1 iPhone OS 2.1.1 iPhone OS 1.1
Latest release operating system Template:Current iOS 15/short Template:Current iOS 12/short iOS 9.3.5 iOS 6.1.6
iOS 7.0 (unofficial)[25]
iOS 5.1.1 iOS 4.2.1 iPhone OS 3.1.3
Display Screen Size 4 in (100 mm) (diagonal)
3.5 by 1.9 in (89 by 48 mm)
3.5 in (89 mm) (diagonal)
2.9 by 1.9 in (74 by 48 mm)
Backlight LED-backlit
Multi-touch Yes
Technology Retina Display widescreen with IPS technology Retina Display widescreen with TN technology Widescreen with TN technology
Resolution 1136 × 640 960 × 640 480 × 320
Pixel Density (ppi) 326 163
Aspect Ratio 71:40 (~16:9) 3:2
Typical Max brightness ( ​cdm2) 500 ?
Contrast ratio (typical) 800:1 200:1
Fingerprint-resistant oleophobic coating Yes No
Full sRGB Display Yes No
Night Shift Yes No
Taptic N/A
Processor Chip Apple A10 Fusion Apple A8 Apple A5 Apple A4 Samsung S5L8922[26] Samsung S5L8720[27] Samsung S5L8900[27]
Technology Node 16 nm 20 nm 32 nm 45 nm 65 nm 90 nm
Total Cores 4 2 1
High-Performance Cores 2 × Hurricane 2 × Typhoon 2 × Cortex-A9 1 × Cortex-A8 1 × ARM 11
Energy-Efficiency Cores 2 × Zephyr N/A
Clock Speed 2.36 GHz
(Underclocked to 1.64 GHz)
1.4 GHz
(Underclocked to 1.1 GHz)
1 GHz
(Underclocked to 800 MHz)
833 MHz
(Underclocked to 600 MHz)
620 MHz
(Underclocked to 533 MHz)
620 MHz
(Underclocked to 420 MHz)
Bit 64-bit 32-bit
Motion Coprocessor Embedded M10 M8 N/A
Bus width 64-bit 32-bit 16-bit
Graphics Processor PowerVR GT7600 Plus (6-core) PowerVR GX6450 (4-core) PowerVR SGX543MP2 PowerVR SGX535 PowerVR MBX Lite 3D
Storage 32 GB, 128 GB, 256 GB 16 GB, 32 GB, 64 GB, 128 GB 16 GB 16 GB, 32 GB, 64 GB 8 GB, 16 GB, 32 GB, 64 GB 8 GB, 32 GB, 64 GB 8 GB, 16 GB, 32 GB
Storage Type NAND Flash driven by NVMe-based controller that communicates over a PCIe connection NAND Flash (eMMC)
RAM 2 GB 1 GB 512 MB 256 MB 128 MB
RAM Type LPDDR4 1600MHz (25.6 GB/s) LPDDR3 800 MHz (12.8 GB/s) LPDDR2 400 MHz (6.4 GB/s) LPDDR2 200 MHz (3.2 GB/s) LPDDR2 200 MHz (1.6 GB/s) LPDDR 133 MHz (1066 MB/s) LPDDR 133 MHz (533 MB/s)
Connector 8-pin Lightning connector 30-pin connector
Connectivity Wi-Fi (802.11) Wi-Fi 5 (802.11a/b/g/n/ac) Wi-Fi 4 (802.11a/b/g/n)
802.11n in both 2.4 GHz and 5 GHz
Wi-Fi (802.11b/g/n)
802.11n in 2.4 GHz only
Wi-Fi (802.11b/g)
MIMO No
Bluetooth Bluetooth 4.1 Bluetooth 4.0 Bluetooth 2.1[28][29] N/A
Sensors Three-axis gyro Yes No
Accelerometer Yes
Rear Camera Camera 8 MP Main N/A 5 MP Main 0.7 MP Main N/A
Aperture f/2.4 N/A f/2.4 ? N/A
Auto Image Stabilization Yes N/A Yes No N/A
Element Lens Five-element lens N/A Five-element lens ? N/A
Optical Zoom N/A N/A
Digital Zoom N/A ? N/A
Autofocus Yes N/A Yes No N/A
Panorama Up to 43 MP N/A Supported N/A
Burst Mode Yes N/A No N/A
Flash LED Flash N/A LED Flash N/A
Live Photos No N/A No N/A
HDR for photos Yes N/A Yes N/A
Video Recording 1080p HD at 25 fps, 30 fps or 60 fps 1080p HD at 30 fps N/A 1080p HD at 30 fps 720p HD at 30 fps N/A
Optical Video Zoom N/A N/A
Digital Video Zoom N/A N/A
Slow-motion video 720p at 120 fps N/A
Time-lapse video with stabilization Without stabilization N/A No N/A
Front Camera Camera 1.2 MP FaceTime HD 0.3 MP N/A
Aperture f/2.4 f/2.2 ? N/A
Live Photos No N/A
Retina Flash No N/A
Video Recording 720p at 30 fps 480p at 30 fps N/A
Slow-motion video No N/A
HDR for photos No N/A
Auto Image Stabilization No N/A
FaceTime Yes N/A
Audio Playback Mono No
Dolby Atmos No
3.5 mm Jack Yes
Compatible with Made for iPhone Hearing Aids Yes No
Live Listen Yes No
Materials Front Space Gray: Black glass front
Silver: White glass front
Gold: White glass front
Pink: White glass front
Blue: White glass front
(PRODUCT)RED: White glass front
Black glass front Space Gray: Black glass front
Silver: White glass front
Yellow: White glass front
Blue: White glass front
Pink: White glass front
(PRODUCT)RED: White glass front
Black: Black glass front
White: White glass front
All models have black glass front
Back Space Gray: Space Gray anodized contoured aluminum back
Silver: Silver anodized contoured aluminum back
Gold: Gold anodized contoured aluminum back
Pink: Pink anodized contoured aluminum back
Blue: Blue anodized contoured aluminum back
(PRODUCT)RED: (PRODUCT)RED anodized contoured aluminum back
Silver anodized contoured aluminum back Space Gray: Space Gray anodized contoured aluminum back
Silver: Silver anodized contoured aluminum back
Yellow: Yellow anodized contoured aluminum back
Pink: Pink anodized contoured aluminum back
Blue: Blue anodized contoured aluminum back
(PRODUCT)RED: (PRODUCT)RED anodized contoured aluminum back
All models have contoured stainless steel back
Side Space Gray: Space Gray anodized contoured aluminum side
Silver: Silver anodized contoured aluminum side
Gold: Gold anodized contoured aluminum side
Pink: Pink anodized contoured aluminum side
Blue: Blue anodized contoured aluminum side
(PRODUCT)RED: (PRODUCT)RED anodized contoured aluminum side
Silver anodized contoured aluminum side Space Gray: Space Gray anodized contoured aluminum side
Silver: Silver anodized contoured aluminum side
Yellow: Yellow anodized contoured aluminum side
Pink: Pink anodized contoured aluminum side
Blue: Blue anodized contoured aluminum side
(PRODUCT)RED: (PRODUCT)RED anodized contoured aluminum side
All models have contoured stainless steel side
Colors                                                                                     
Power 3.83 V 3.99 W·h (1,043 mA·h)[30][31] 3.7 V 3.8 W·h (1,030 mA·h)[32][33] 3.7 V 3.44 W·h (930 mA·h)[34] 3.7 V 2.92 W·h (789 mA·h)[35] 3.7 V 2.73 W·h (739 mA·h)[36] 3.7 V 2.15 W·h (580 mA·h)[citation needed]
Dimensions Height 123.4 mm (4.86 in) 110 mm (4.3 in)
Width 58.6 mm (2.31 in) 58 mm (2.3 in) 61.8 mm (2.43 in)
Depth 6.1 mm (0.24 in) 7.1 mm (0.28 in) 8.5 mm (0.33 in) 8 mm (0.31 in)
Weight 88 g (3.1 oz) 86 g (3.0 oz) 88 g (3.1 oz) 101 g (3.6 oz) 115 g (4.1 oz) 120 g (4.2 oz)
Total greenhouse gas emissions 32 kg CO2e[37] 70 kg CO2e[38] 45 kg CO2e[39] 60 kg CO2e[40] 50 kg CO2e[41] 33 kg CO2e[42] 30 kg CO2e[43] N/A
Hardware strings iPod9,1 iPod7,1 iPod5,1 iPod4,1 iPod3,1 iPod2,1 iPod1,1
Model number A2178 A1574 A1509 A1421 A1367 A1318 A1288
A1319
A1213
Announced Date May 28, 2019 July 15, 2015 May 30, 2013 September 12, 2012 September 1, 2010 September 9, 2009 September 9, 2008 September 5, 2007
Released Date May 28, 2019 July 15, 2015 May 30, 2013 32 and 64 GB: October 11, 2012
16 GB: June 26, 2014
Black (8 GB, 32 GB, and 64 GB): September 1, 2010
White (8 GB, 32 GB, and 64 GB): October 12, 2011
Black and white (16 GB): September 12, 2012
September 9, 2009 A1288: September 9, 2008
A1319 8 GB: September 9, 2009
8 GB and 16 GB: September 5, 2007
32 GB: February 27, 2008
Discontinued Date May 10, 2022 16 GB and 64 GB: July 27, 2017
32 GB and 128 GB: May 28, 2019
June 26, 2014 July 15, 2015 8 GB and 64 GB: September 12, 2012
16 GB and 32 GB: May 30, 2013
September 1, 2010 A1288: September 9, 2009
A1319 8 GB: September 1, 2010
September 9, 2008
Unsupported Date Bug fixes only January 23, 2023 September 13, 2016 February 21, 2014 September 19, 2012 March 9, 2011 June 21, 2010

Reception

Upon launch in 2007 the first generation iPod Touch received mostly good reviews for its display, its full Web browser, and YouTube support. However, it was also criticized for being a "stripped down" iPhone, for lacking external volume buttons on its initial models, and for having a lower-quality display.[44][45][46]

Notable competing products as of 2009 included Creative's ZEN X-Fi2, Sony's Walkman X Series, and Microsoft's Zune HD;[47][48] and as of 2011, the Samsung Galaxy Player[49] and Sony Walkman Z Series.

Later models received a more lukewarm reception, with reviewers questioning whether an iPod Touch made sense as a product in a time where smartphones had become more affordable.[50]

Discontinuation

In May 2022, Apple announced that after over 20 years, the iPod Touch, and the iPod line as a whole, were to be discontinued; the iPod Touch would remain available only while supplies last.[51]

See also

Notes

  1. 1.0 1.1 1 GB = 1 billion bytes

References

  1. "The music lives on". Apple Newsroom. May 10, 2022. https://www.apple.com/newsroom/2022/05/the-music-lives-on. 
  2. 2.0 2.1 Smith, Mat (May 30, 2013). "Apple: 100 million iPod touches sold since 2007". Engadget. AOL Inc.. https://www.engadget.com/2013/05/30/apple-100-million-ipod-touches-sold. 
  3. 3.0 3.1 3.2 3.3 3.4 3.5 "Identify your iPod model – Apple Support". https://support.apple.com/en-us/HT204217. 
  4. "iPod touch – Features". Apple. https://www.apple.com/ipod-touch/features. 
  5. "Apple cuts prices on iPod Touch line, refreshes 16 GB model". CNET. June 26, 2014. http://www.cnet.com/news/apple-cuts-prices-on-ipod-touch-line/. 
  6. "Apple removes iPod nano and shuffle from website hinting at discontinuation". 9to5Mac. 27 July 2017. https://9to5mac.com/2017/07/27/apple-removes-ipod-shuffle-nano-sale-discontinue/. 
  7. Clark, Mitchell (2022-05-10). "Apple discontinues the iPod after 20 years" (in en). https://www.theverge.com/2022/5/10/23065412/apple-ipod-touch-canceled-discontinued. 
  8. "iPod touch pulled completely from Apple's website, will not support iOS 16" (in en-GB). 2022-06-09. https://www.theapplepost.com/2022/06/09/ipod-touch-pulled-completely-from-apples-website-will-not-support-ios-16/. 
  9. Sadun, Erica (September 5, 2007). "Apple announces iPod touch: iPhone without the phone". TUAW. http://www.tuaw.com/2007/09/05/apple-announces-ipod-touch-iphone-without-the-phone. 
  10. "Apple announce iOS 5 and iPhone release date". Apple. October 4, 2011. http://events.apple.com.edgesuite.net/11piuhbvdlbkvoih10/event/index.html. 
  11. Lawler, Richard (October 4, 2011). "iPod touch still maxes out at 64 GB / $399, available in white October 12th". Engadget. AOL. https://www.engadget.com/2011/10/04/new-ipod-touch-maxes-out-a-64gb-399-available-in-white-octob. 
  12. Gunther, Cory (September 19, 2012). "What's new in iOS 6? Here's the changelog". SlashGear. R3 Media. http://www.slashgear.com/whats-new-in-ios-6-heres-the-changelog-19248506. 
  13. Block, Ryan (January 17, 2008). "iPod touch users: if you bought after Jan 1 the new apps are free – maybe". Engadget. AOL. https://www.engadget.com/2008/01/17/ipod-touch-users-if-you-bought-after-jan-1-the-new-apps-are-fre. 
  14. Arya, Aayush (January 24, 2008). "Early Adopter Tax Resurfaces with the iPod touch January Software Upgrade". AppleMatters. http://www.applematters.com/article/early-adopter-tax-resurfaces-with-the-ipod-touch-january-software-upgrade. 
  15. Dalrymple, Jim. "Accounting rules behind iPod touch update charge". Macworld. https://www.macworld.com/article/189247/ipodtouch-3.html. 
  16. "iOS 5 – See new features included in iOS 5". Apple. https://www.apple.com/ios/features.html#pcfree. 
  17. Fildes, Nic (September 19, 2007). "iPhone finally arrives but it's neither cheap nor G3". The Independent (UK). https://www.independent.co.uk/news/business/news/iphone-finally-arrives-but-its-neither-cheap-nor-g3-402835.html. 
  18. "Make a call with Wi-Fi Calling" (in en). https://support.apple.com/en-us/HT203032. 
  19. "Apple iPhone 5 features". Apple. September 12, 2012. https://www.apple.com/iphone/features. 
  20. McGlaun, Shane (September 13, 2012). "iPhone 5 won't work with some accessories even with Apple Lightning adapter". SlashGear. R3 Media. http://www.slashgear.com/iphone-5-wont-work-with-some-accessories-even-with-lightning-adapter-13247441. 
  21. Wilson, Ben (October 10, 2007). "Official iPhone 1.1.1 jailbreak released with easy-to-follow instructions; does not require TIFF exploit". CNET. CBS Interactive. http://reviews.cnet.com/8301-19512_7-10115200-233.html. 
  22. Keizer, Gregg (October 29, 2007). "Hacker Software Can Install Unauthorized Software on iPhones". PCWorld. http://www.pcworld.com/article/139061/hacker_software_can_install_unauthorized_software_on_iphones.html. 
  23. "iPod and iSight Warranty". Apple. p. 1. https://images.apple.com/legal/warranty/docs/ipodisight.pdf. 
  24. "Vintage and obsolete products". Apple. https://support.apple.com/en-us/HT201624. 
  25. "iOS 7 on iPod Touch 4g". 2018. https://albyvar.github.io/ipodtouchhax. 
  26. "The iPhone 3GS Hardware ES performance and system information". Glbenchmark.com. http://glbenchmark.com/phonedetails.jsp?benchmark=glpro11&D=Apple%20iPhone%203G%20S&testgroup=overall. 
  27. 27.0 27.1 "That iPod touch runs at 533 MHz". TechHive. November 25, 2008. http://www.pcworld.com/article/154518/.html?tk=rss_news. 
  28. "iPod Touch gets Bluetooth after OS upgrade". March 17, 2009. https://www.cnet.com/culture/ipod-touch-gets-bluetooth-after-os-upgrade/. Retrieved October 16, 2022. 
  29. "BCM4325 Datasheet, PDF - Alldatasheet". https://www.alldatasheet.com/view.jsp?Searchword=BCM4325. 
  30. "iPod Touch 6th Generation Teardown". iFixit. July 16, 2015. https://www.ifixit.com/Teardown/iPod+Touch+6th+Generation+Teardown/44378. 
  31. O'Camb, Adam (May 31, 2019). "iPod Touch Not-A-Teardown: The Headphone Jack Lives". iFixit. https://ifixit.org/blog/17169/ipod-touch-not-a-teardown-the-headphone-jack-lives/. 
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