Where to find iPhone updates and how to install them

iPhone updates arrive through the Settings app on your device. Open Settings, tap General, then tap Software Update. Your iPhone will check Apple's servers and tell you whether a new version is available. If one is ready, you'll see the option to Download and Install or Install Now, depending on whether you've already downloaded it. Updates typically take 15 to 30 minutes to install, and your phone will restart during the process.

Apple releases updates regularly throughout the year. Major versions (like iOS 18) arrive in September, while smaller updates that fix security issues or bugs come out roughly monthly. You don't have to install updates immediately — your phone will remind you periodically, and you can dismiss the notification to install later.

Key Takeaways

  • Check for updates by opening Settings, tapping General, then Software Update.
  • Your iPhone will show whether an update is available and how much storage space it needs.
  • You can download updates over Wi-Fi and install them immediately, or download now and install at a time you choose.
  • Plugging your iPhone into power before installing an update prevents it from shutting down mid-process if the battery drains.
  • If an update fails to install, restarting your iPhone and trying again usually resolves the problem.

Automatic updates vs. manual checking

You can set your iPhone to download and install updates automatically, so you don't have to check manually. Go to Settings, tap General, then Software Update, then tap Automatic Updates. Turn on "Download iOS Updates" to download new versions in the background, and turn on "Install iOS Updates" to install them automatically, usually overnight when your phone is plugged in and connected to Wi-Fi.

If you turn on automatic installation, your iPhone will still notify you before restarting. You can postpone the restart for up to an hour if you're in the middle of something. If automatic updates are off, you'll need to check Settings manually or wait for reminders from your phone.

What to do before installing an update

Before you install an update, make sure your iPhone has enough storage space. The update itself takes temporary space during installation — typically 2 to 5 GB depending on the iOS version. If your phone is nearly full, you may need to delete photos, videos, or apps first. Settings will tell you how much space the update needs before you start.

Plug your iPhone into power before you begin. Updates can take 20 to 40 minutes, and if your battery dies during installation, your phone may not restart properly. Connect to Wi-Fi as well — updates are large files, usually 500 MB to 3 GB, and using cellular data will drain your phone plan and take much longer.

Troubleshooting a stuck or failed update

If an update gets stuck or fails to install, restart your iPhone first. Press and hold the side button and either volume button until the power-off slider appears, then drag it to turn off your phone. Wait 30 seconds, then press and hold the side button again until you see the Apple logo. Once your phone restarts, go back to Settings and try the update again.

If the update still won't install after a restart, try connecting to a different Wi-Fi network. Sometimes a weak or unstable connection causes the download to fail partway through. If you've already downloaded the update and installation keeps failing, go to Settings, General, iPhone Storage, and look for the update file itself — you may be able to delete it and download it fresh.

Understanding what happens during an update

When you tap Install Now, your iPhone will restart and show an Apple logo with a progress bar. This is normal and can take 10 to 20 minutes. Your phone is not broken or frozen — it's installing the new operating system. Do not force restart your phone or unplug it during this time.

After the installation finishes, your iPhone will restart again and you'll see the lock screen. You may need to enter your passcode. Your apps, photos, messages, and settings stay exactly where they were — the update only changes the underlying operating system, not your personal data.

Checking which iOS version you have

To see which version of iOS is currently installed on your iPhone, open Settings, tap General, then tap About. Look for the line that says "Software Version" — that's your current iOS version. The number tells you both the major version (like 18) and the minor version (like 18.1.2). If you're several versions behind the latest, you may have multiple updates waiting for you.

Your iPhone will install updates in order, so if you're far behind, the first update you see may not be the newest one. After you install it, check for updates again — there may be another one waiting. This is normal and expected.

Why your iPhone might not show an available update

If you check for updates and see "Your software is up to date," your iPhone is already running the latest version. This doesn't mean updates will never come — it means no new version exists yet. Apple releases updates on a schedule, usually every few weeks for security patches and every September for major releases.

If you believe an update should be available but your phone isn't showing it, try restarting your iPhone and checking again. Sometimes the update server takes a few hours to reach all devices. You can also check Apple's official website to see what the current iOS version is — if your phone's version matches, you're current.

Frequently Asked Questions

Do I have to update my iPhone?

No, but Apple recommends installing updates as soon as they're available. Updates fix security problems that hackers can exploit, and they often improve performance and battery life. Older iPhones may eventually stop receiving updates once they reach the end of their support period, usually around five to seven years after release.

Will an update delete my photos or messages?

No. Updates change only the operating system, not your personal data. Your photos, messages, contacts, apps, and settings remain unchanged. If you're concerned, you can back up your iPhone to iCloud before updating — go to Settings, tap your name, tap iCloud, then tap iCloud Backup and tap Back Up Now.

Can I use my iPhone while it's updating?

No. Once you tap Install Now, your iPhone will restart and you won't be able to use it until the update finishes. The entire process usually takes 20 to 40 minutes. Plan to update when you won't need your phone for at least an hour.

What if I don't have Wi-Fi available?

You can download updates over cellular data, though it will use a significant amount of your data plan — typically 500 MB to 3 GB per update. Installation itself doesn't require an internet connection once the update is downloaded, so you can download over Wi-Fi at home and install anywhere.

Why is my iPhone asking me to update so often?

Apple releases security updates roughly every month to fix newly discovered problems. If you have automatic updates turned off, these notifications will keep appearing until you install them. Turning on automatic updates in Settings will install them silently in the background, usually overnight.