Unsure which version of iOS your iPhone can run? Here’s a quick guide so you can find out if your iPhone is compatible with the most recent iterations of the iPhone operating system, and, if it isn’t, which version you can install on your iPhone.
Apple gives iOS a major update each year, usually introducing new features and some stability upgrades to the previous version, plus numerous smaller updates in between. The latest version of iOS is iOS 17 (which was launched in September 2023), but a new version – iOS 18 – has been announced and will launch in September 2024.
Although the company is better than most at keeping older models on the list of supported devices, hardware limitations can sometimes mean that an iPhone gets left behind. This doesn’t mean the device will stop working, but you won’t be able to access the newer features and capabilities that come with the updated software and you may be vulnerable to security flaws. If your iPhone can’t run one of Apple’s supported versions of iOS then it’s probably time to upgrade your iPhone. To find out more read how long Apple supports the iPhone for.
If you want to see a brief history of iOS, then take a look at our guide to Every version of iOS released so far.
Latest iOS version supported by each iPhone
To show you which version of iOS your iPhone can run, we’ve broken down each iPhone generation so you know which version it originally shipped with (as that will be the earliest it can run) and the latest iteration it currently supports–including whether that iPhone will support iOS 18. We’ve not listed the smaller ‘point’ releases, as they change all the time, so take it as understood that any version of iOS that the iPhone is shown as supporting (such as iOS 16) also means any smaller point updates too (such as iOS 16.4.1).
It should be noted that Apple has stopped supporting a lot of the older versions of iOS now, meaning there are no new security patches for them. Apple currently supports the last two generations of the iPhone operating system with security updates: iOS 16 or iOS 15. iPhones that could run iOS 13 and iOS 14 can run iOS 15, so those versions of iOS are considered obsolete by Apple and aren’t updated. Apple updated iOS 12 for the last time in January 2023 and has not issued any further iOS 12 updates, so the iPhones 6, 6 Plus and 5S – are no longer supported with security updates.
With the advent of iOS 18 in September 2024 the list of supported iOS versions will likely change again. We anticipate that Apple will continue to support iOS 16 for the sake of the iPhones X, 8 and 8 Plus, but support for iOS 15 and the iPhones 7, 6S, 6S Plus and 1st gen SE is likely to end.
The good news is that the compatibility list for iOS 18 is the same as iOS 17, so those with the iPhone XR, XS or 2nd gen SE will get to enjoy iOS 18. However, to use Apple Intelligence you’ll need the iPhone 15 Pro or iPhone 15 Pro Max, which has an A17 Pro processor.
iOS 17 did not support iPhone 8 or the iPhone X which came out in 2017, but since those phones are able to run iOS 16, they will continue to get support through security updates for at least another year.
iPhone 15, 15 Plus, 15 Pro, 15 Pro Max
- Original iOS version: 17
- Latest iOS version: 17
- Will it get iOS 18: Yes
iPhone 14, 14 Plus, 14 Pro, 14 Pro Max
- Original iOS version: 16
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone 13, 13 mini, 13 Pro, 13 Pro Max
- Original iOS version: 15
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone SE (3rd generation)
- Original iOS version: 15
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone 12, 12 mini, 12 Pro, 12 Pro Max
- Original iOS version: 14
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone 11, 11 Pro, 11 Pro Max
- Original iOS version: 13
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone SE (2nd generation)
- Original iOS version: 13
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone XR, XS, XS Max
- Original iOS version: 12
- Latest iOS version: 16
- Will it get iOS 18: Yes
iPhone X
- Original iOS version: 11
- Latest iOS version: 16
- Will it get iOS 17 or iOS 18: No
iPhone 8, 8 Plus
- Original iOS version: 11
- Latest iOS version: 16
- Will it get iOS 17 or iOS 18: No
iPhone 7, 7 Plus
- Original iOS version: 10
- Latest iOS version: 15
- Will it get iOS 17: No
iPhone 6S, 6S Plus
- Original iOS version: 9
- Latest iOS version: 15
- Will it get iOS 17: No
iPhone SE (1st generation)
- Original iOS version: 9
- Latest iOS version: 15
- Will it get iOS 17: No
iPhone 6, 6 Plus
- Original iOS version: 8
- Latest iOS version: 12
- Will it get iOS 17: No
iPhone 5S
- Original iOS version: 7
- Latest iOS version: 12
- Will it get iOS 17: No
iPhone 5C
- Original iOS version: 7
- Latest iOS version: 10
- Will it get iOS 17: No
iPhone 5
- Original iOS version: 6
- Latest iOS version: 10
- Will it get iOS 17: No
iPhone 4s
- Original iOS version: 5
- Latest iOS version: 9
- Will it get iOS 17: No
iPhone 4
- Original iOS version: 4
- Latest iOS version: 7
- Will it get iOS 17: No
iPhone 3GS
- Original iOS version: 3
- Latest iOS version: 6
- Will it get iOS 17: No
iPhone 3G
- Original iOS version: 2
- Latest iOS version: 4
- Will it get iOS 17: No
iPhone
- Original iOS version: 1
- Latest iOS version: 3
- Will it get iOS 17: No
If your iPhone isn’t supported by iOS 18, 17, or 16 then you might want to consider upgrading to a newer device. Take a look at our best iPhone deals round-up where we share the most recent money-saving deals. Read our best iPhone guide for advice.
How to tell which version of iOS you’re running
If you’re not sure which version of iOS you’re currently running, it’s very easy to find out.
- Open Settings.
- Tap on General.
- Tap About and look for the iOS Version number.
The number you’re looking for will be something like 16.0 or 15.3.1. Don’t worry about the bit in parentheses. 
The number you’re looking for will be something like 16.0 or 15.3.1. Don’t worry about the bit in parentheses.
Foundry
The number you’re looking for will be something like 16.0 or 15.3.1. Don’t worry about the bit in parentheses.
Foundry
Foundry
How to upgrade iOS
Now that you know the latest version of iOS that your iPhone supports, it’s a good idea to make sure you’re running on that platform. We have a guide on how to update iOS on your iPhone, so take a look at that and follow the simple instructions to get your iPhone up to date.
Also, if your iPhone supports iOS 18 you sign up to test a beta version of iOS 18 before the official launch and following that as Apple develops even more new features for iOS 18. There are a few caveats to consider, so read how to join Apple’s beta software program before you take the plunge.
