If you haven’t updated your iPhone in a while — or you just bought a used one — it’s natural to wonder: what’s the newest iOS my phone can actually run? Apple supports iPhones for years, but every model eventually stops receiving major updates. Here’s how to find the latest iOS version available for your specific iPhone, both on the device itself and with a handy online tool.
Method 1: Check right on your iPhone
The fastest way is built into iOS:
- Open Settings and tap General.
- Tap Software Update.
- Your iPhone checks Apple’s servers and shows the newest iOS version it can install.
If an update is available, you’ll see its version number and a Download and Install button. If your iPhone is already on the latest supported release, it will say so. Note that Apple sometimes offers a choice between the newest major release and a security update for the previous one — handy if you’d rather not jump versions yet. If you’d prefer to stay put indefinitely, see our guide on how to completely block iOS updates on iPhone.
Method 2: Look up every iOS version for your model
Software Update only shows what you can install right now. To see the full picture — every iOS version ever released for your model and which ones Apple still allows you to install — use a firmware archive such as ipsw.me:
- Go to the firmware archive site and choose iPhone.
- Select your exact model (check Settings → General → About → Model Name if you’re unsure).
- You’ll see a list of firmware versions. Versions marked in green are still signed by Apple and can be installed; the rest are closed for good.
This list is also the starting point for advanced tasks like reinstalling iOS manually with a computer.
How long will your iPhone keep getting updates?
Apple typically supports an iPhone with major iOS updates for five to six years after release, plus extra years of security patches. You can check Apple’s official vintage and obsolete products list to see where your model stands. Tech sites like 9to5Mac also track which devices each new iOS version supports when Apple announces it every June.
If it still doesn’t work
No update showing even though you expected one? First, confirm your model is still supported — an iPhone that topped out at iOS 16 will never offer iOS 17. Second, make sure you have enough free storage and a stable Wi-Fi connection. Third, check for an installed beta or configuration profile under Settings → General → VPN & Device Management, which can hide public updates. Removing the profile and restarting usually brings the update back.
FAQ
Can I install an older iOS version instead of the latest?
Only if Apple still signs it — check the green markers in the firmware archive. Once signing stops, usually days after a new release, the older version can’t be installed.
Does “latest iOS” include beta versions?
No. Software Update shows public releases by default. Betas only appear if you’ve enrolled in the Apple Beta Software Program.
The bottom line
Finding the latest iOS for your iPhone takes less than a minute: peek at Software Update, or dig into a firmware archive for the complete version history. Knowing your ceiling helps you decide whether to update, stay put, or start shopping for a newer model — and if your iPhone misbehaves in other ways, like switching audio outputs on its own, we have guides for that too.
