Where to find iPhone updates on your device

iPhone updates live in the Settings app, not in the App Store. Open Settings, then tap General. From there, tap Software Update. Your phone will check Apple's servers and tell you whether a new version is available. If one is waiting, you'll see the version number and how much storage it needs.

The check takes a few seconds. If nothing appears on screen, your iPhone is already running the latest version available for your model. Different iPhone models sometimes get updates at different times, so an older iPhone might not receive the same update as a newer one.

You don't need to do anything else to check — just looking at this screen tells you the status. Write down the version number you see (it looks like 17.2.1 or similar) if you want to remember what you're running.

Key Takeaways

  • Open Settings, tap General, then tap Software Update to see whether a new version is available for your iPhone.
  • If an update is waiting, the screen shows the version number and storage space required before you decide to install it.
  • Updates install over Wi-Fi and usually take 15 to 30 minutes, during which your phone will restart multiple times.
  • Your iPhone can check for updates automatically at night if you turn on automatic updates in Settings > General > Software Update.
  • Plugging in power and staying on Wi-Fi gives your phone the best conditions to complete an update without interruption.

Installing an update when one is available

When you see an update waiting on the Software Update screen, tap Download and Install. Your phone will download the full update file — this can take several minutes depending on your Wi-Fi speed. Once the download finishes, tap Install Now or let it install during the scheduled time if you chose to delay it.

During installation, your iPhone will restart several times. The screen will go dark, show the Apple logo, and come back to life. This is normal. Don't unplug your phone or turn it off. The whole process usually takes 15 to 30 minutes from start to finish.

If your phone battery is low, iOS will ask you to plug in before installing. Plug it in and wait — the update won't start until the battery reaches a safe level. Staying plugged in throughout the update is the safest approach.

What to do if an update won't download

If the download stalls or fails, go back to Settings > General > Software Update and try again. Make sure you're on a strong Wi-Fi network, not cellular data. Updates are large files and cellular connections often drop or throttle, causing downloads to fail partway through.

If the same update keeps failing, restart your iPhone completely. Hold the power button until you see "slide to power off," slide it, wait 30 seconds, then hold the power button again until the Apple logo appears. Once it restarts, go back to Software Update and try downloading again.

If it still won't work, forget your Wi-Fi network and reconnect to it. Go to Settings > Wi-Fi, tap the network name, tap Forget, then reconnect by selecting the network again and entering your password. This clears out any connection problems that might be blocking the download.

Turning on automatic updates so you don't have to check manually

You can set your iPhone to download and install updates on its own. Go to Settings > General > Software Update, then tap Automatic Updates. Turn on both Download iOS Updates and Install iOS Updates. Your phone will check for updates every night and install them automatically between 2 a.m. and 3 a.m. if your phone is plugged in and on Wi-Fi.

Automatic updates mean you never have to remember to check manually. Your iPhone stays current without any action from you. The installation happens at night when you're not using the phone, so it won't interrupt your day.

If you turn on automatic updates but want to install a new update right away instead of waiting for tonight, you can still go to Settings > General > Software Update and tap Install Now. Automatic updates don't prevent you from installing manually when you want to.

Understanding what version number means

iPhone version numbers look like 17.2.1 or 18.0. The first number (17 or 18) is the major version — this is a big update with new features. The second number (the 2 in 17.2) is a minor update that adds smaller features or improvements. The third number (the 1 in 17.2.1) is a security patch that fixes problems without adding new features.

You don't need to memorize your version number, but it's useful to know when talking to Apple Support or checking whether your phone has a specific security patch. You can find your current version anytime by going to Settings > General > About and looking at the line that says Software Version.

Why your iPhone might not show an available update

If you check Software Update and see "Your software is up to date," your phone is already running the latest version for your model. Older iPhones sometimes stop receiving updates after several years — Apple supports each model for roughly five to six years, but this varies.

If you just installed an update yesterday and check again today, you won't see a new one. Updates don't come out every day. Most months have one or two updates, but some months have none.

If you're expecting a specific update you heard about but don't see it, it might not be available for your iPhone model yet. Apple sometimes rolls out updates gradually, so your phone might get it a few days after the announcement. Check again in a few days if you're waiting for something specific.

What happens if you ignore an update for a long time

Ignoring updates won't break your phone, but it does leave security gaps open. Each update patches problems that hackers know about and are actively trying to use. The longer you wait, the longer your phone is vulnerable to those problems.

If you keep ignoring updates, iOS will eventually start reminding you more aggressively — notifications will appear more often, and the Settings icon might show a red badge with a number. These are signs that Apple wants you to update soon.

You can keep using your phone without updating, but it's not recommended. Updates also usually make your phone faster and fix bugs that cause crashes or battery drain. Installing them within a week or two of release is the best practice.

Frequently Asked Questions

Can I check for updates on Wi-Fi only, without using cellular data?

Yes. Go to Settings > General > Software Update and it will only check and download over Wi-Fi. If you're not on Wi-Fi, the screen will tell you to connect to Wi-Fi before downloading. You can't download iOS updates using cellular data — Apple requires Wi-Fi for this.

What if my iPhone storage is full and the update needs space?

The Software Update screen will tell you how much space the update needs. If you don't have enough, delete photos, videos, or apps you don't use to free up space. Once you have enough free space, go back to Software Update and try again. You don't need to delete anything permanently — you can reinstall apps later.

Will updating erase my photos and messages?

No. Updates install on top of your existing data and don't erase anything. Your photos, messages, contacts, and apps all stay exactly as they are. The only time data gets erased is if you manually reset your phone, which is different from updating.

How do I know if an update is safe to install?

All updates from Apple through the Software Update screen are safe. Don't install iOS from anywhere else — only use Settings > General > Software Update. If you see a pop-up or email asking you to update somewhere other than Settings, it's not from Apple and you should ignore it.

Can I use my iPhone while it's updating?

No. During installation, your phone restarts multiple times and the screen goes dark. You won't be able to make calls, send messages, or use apps until the update finishes. Plan for 15 to 30 minutes when you won't need your phone.