List of iOS and iPadOS devices

This is a list and comparison of devices designed and marketed by Apple Inc. that run a Unix-like operating system named iOS and iPadOS. The devices include the iPhone, the iPod Touch which, in design, is similar to the iPhone, but has no cellular radio or other cell phone hardware, and the iPad. All three devices function as digital audio and portable media players and Internet clients. The Apple TV, which runs tvOS, is a set-top box for streaming media from local sources and from certain internet services to a connected television set, and has no screen of its own. About 1.35 billion iOS devices have been sold worldwide as of March 2015. As of September 2018, about 2 billion iOS devices have been sold worldwide.
The operating system on iOS devices can be updated through iTunes or Finder (from macOS Catalina), or on iOS 5 or later, using over-the-air (OTA) updates. A major version of iOS tends to be released every time a new type of iPhone is launched (usually once a year), with minor changes throughout the year as needed. All updates are free to iOS devices (although iPod Touch users were formerly required to pay for the update). Apple upgrades its products' hardware periodically (approximately yearly).
Models.
Legend.
Source:
Apple TV.
The second and third generation of Apple TV run an unnamed operating system derived from iOS. The fourth and subsequent generations of Apple TV run the iOS-based tvOS. (The first generation ran a modified version of Mac OS X Tiger instead of iOS.)
Comparison of models.
Battery life.
Apple runs tests on pre-production units to determine battery life. However, these are purported maximums ("up to"), and actual user experiences vary. All numbers are in hours unless specified.
Storage.
Apple has increased the storage capacity of its devices over time. Units were or are available with a given storage capacity as indicated.
Supported iOS releases.
This table indicates the highest supported versions of iOS or iPadOS available for each generation of iOS devices. Beta versions may be listed only if support is discontinued for some older devices.
Display.
The display introduced with the original iPhone was almost unchanged in all models before 2010. The iPad has a larger display and also uses a different aspect ratio and resolution. The iPhone 4, iPhone 4s, and fourth generation iPod Touch keep the physical dimensions of prior models, but double the resolution in both dimensions, thereby quadrupling the number of pixels in the same amount of space. The iPhone 5 was the first departure from the traditional iPhone and iPod Touch screen size, increasing it from 3.5 to , and the resolution was increased to include the extra screen space. The iPhone 6 and iPhone 6 Plus were the second departure from the traditional iPhone and iPod Touch screen size, increasing the screen sizes from 4 to and respectively, with increased resolution to include the extra screen space. The iPhone X was the third departure from the traditional iPhone screen size, increasing the screen size to . The iPhone XR and iPhone XS Max were the fourth departure from the traditional iPhone screen size, increasing the screen size to and respectively.
Geekbench scores.
Note: Hardware reviewers have commented that these benchmark results are not comparable with other CPU/SoCs architecture due to the software codes optimization.