How Long Does Apple Support Older iPhone Models?

When iOS 15 arrives today, a vast majority of iPhone users will get to enjoy it. For the second time running, Apple have managed the remarkable feat of leaving no additional generation of iPhones behind. That means even users of the iPhone 6s and 6s Plus, originally released in 2015, will be able to make the jump, even though some of the more techy features won’t work on their phones.

As the following chart shows, Apple has done a good job over the years of keeping older devices in the loop for a long time. While the original iPhone and the iPhone 3G received two major iOS updates, later models have typically gotten software updates for five to six years. Having been shipped with iOS 9, the iPhone 6s has now become the first generation to see a seventh iOS version, making it the technological equivalent of a tortoise outlasting generations of humans.


This chart shows how many iOS versions past iPhone models have been compatible with.

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Apple iOS mobile market share in the United Kingdom (UK) 2011-2021
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Mobile Apple iOS version market share worldwide 2018-2021
Market share of Apple iOS sales in Spain 2016-2020, by month
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Apple iOS global smartphone OS market share 2011-2020, by quarter
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South America: Apple iOS market share 2020-2021, by version
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Tablet Apple iOS version market share worldwide 2018-2021

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