How to Fix iOS 18 Is Temporarily Unavailable

The release of iOS 18 brought exciting new features, but some users are facing a frustrating issue: the "iOS 18 Is Temporarily Unavailable. Try again later" error. Whether you're trying to update your device, access certain features, or simply navigate through the system, this error can be a significant roadblock. Fortunately, there are several solutions you can try to resolve iOS 18 is temporarily unavailable and get your device running smoothly. Here's a guide to help you troubleshoot and fix the issue quickly.

Part 1. Why do I get the iOS 18 is temporarily unavailable error?

The "iOS 18 is Temporarily Unavailable. Try Again Later." error typically occurs due to a few common reasons:

Apple Server Issues: If Apple's servers are overloaded or undergoing maintenance, you might encounter this error. High demand during new updates can also cause server delays.

Network Problems: A weak or unstable internet connection can prevent your device from connecting to Apple's servers, triggering this error message.

Insufficient Storage: If your device doesn't have enough storage space for the update, you may receive this error.

Device or Software Glitches: Temporary software glitches or outdated device settings can interfere with the update process.

Update Not Yet Available: In some cases, the update might not be fully rolled out in your region or for your specific device model, leading to this message.

Part 2. How to upgrade to iOS 18 to fix iOS 18 is temporarily unavailable?

If you keep getting “iOS 18 is temporarily unavailable. Try Again Later” error while upgrading iOS 18, then you can look for other alternative to upgrade your iPhone to iOS 18, you can choose TunesKit iOS System Recovery, which is a multi-functional tool that not only repairs your iOS device in one click, but also easily upgrade your iPhone to iOS 18 Beta without the need of developer account. There is no need to worry about causing data loss while performing the iOS upgrade. TunesKit always keeps your data safe.

Let's see how to upgrade to iOS 18 using TunesKit iOS System Recovery.

Step 1Connect your iPhone

Acquire the TunesKit iOS System Recovery on your computer(Windows & Mac). It should automatically launch after installation. Connect your iPhone to your computer using a lighting-to-USB cable. Select the Upgrade/Downgrade iOS on the main interface, and at the next page, select iOS upgrade feature.

Step 2Get the latest iOS 18 firmware package

This software will auto-detect your device model and current iOS version, you can select the iOS 18 Beta firmware version from the list. Then click the Download button to start downloading this firmware package on your iPhone. After that, click the Start Upgrade option.

Step 3Upgrade to iOS 18 to fix iOS 18 is temporarily unavailable

Once you have successfully upgraded, click on the Finish button on the screen. Then you can enjoy the new features of iOS 18 on your iPhone.

Part 3. Other proven ways to fix iOS 18 is temporarily unavailable issue

Fix 1. Check Apple's System Status

Sometimes, the problem isn’t on your end. Apple's servers might be experiencing downtime, preventing you from accessing iOS 18. Before diving into more complex fixes, check Apple's System Status page to see if there are any reported issues. If Apple's servers are down, you may need to wait until they are back online.

Fix 2. Check Your Internet connection

A stable internet connection is crucial for updating iOS or accessing Apple's servers. Ensure your Wi-Fi or cellular data is working correctly. Here are some tips for you to troubleshoot your internet connection.

1. Move closer to your Wi-Fi router or switch to a more stable network if possible.

2. Unplug your router, wait 10-15 seconds, and then plug it back in. This can resolve temporary glitches with your internet connection.

3. Enable Airplane Mode for a few seconds, then disable it. This action resets your device's network connections.

4. If you're using a VPN, temporarily disable it, as it can sometimes interfere with your device's ability to connect to Apple's servers.

5. Go to Settings > Wi-Fi, tap on your network, and select Forget This Network. Reconnect to the network by re-entering your password.

6. If the problem continues, reset your network settings. Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. Note that this will erase all saved Wi-Fi passwords and Bluetooth connections.

Fix 3. Free Up Storage Space

iOS updates require sufficient storage space. If your device is low on storage, the update might not proceed, causing the "Temporarily Unavailable" error. Therefore, you can free up storage space on your iPhone.

Step 1. Open the Settings app on your iPhone, and tap General > iPhone Storage section.

Step 2. Check the apps that take up the most storage space and you may consider removing them.

Step 3. Alternatively, you can delete unnecessary files, photos, and videos to free up space.

Fix 4. Restart Your iPhone

A simple restart can resolve many temporary glitches, including iOS 18 is temporarily unavailable issue.

Simply press and hold the power button and the volume up or down button at the same time. Until the Slide to power off option appears, slide the slider to the right to let it close completely. Wait for a while and press and hold the power button to turn it back on.

This quick action often refreshes system processes and might clear up the error.

Fix 5. Force Restart Your iPhone

If a simple reboot doesn't solve the problem of iOS 18 being temporarily unavailable, then you can try force restarting your iPhone. It won't result in data loss.

You can quickly press and release the volume up button, followed by the volume down button. Then, press and hold the side button until the Apple logo appears on your screen, and release it.

Fix 6. Use iTunes or Finder to Upgrade to iOS 18

Upgrading your iPhone to iOS 18 using iTunes or Finder is also a good option, and this method also fixes the iOS 18 temporarily unavailable error. Here's how:

Step 1. Ensure you have the latest version of iTunes installed on your PC or Finder on your Mac.

Step 2. Use a USB cable to connect your iPhone or iPad to your computer. If prompted, select Trust This Computer on your device and enter your passcode.

Step 3. If you're using a PC or a Mac with macOS Mojave or earlier, open iTunes. On macOS Catalina or later, open Finder.

Step 4. In iTunes, click on the device icon in the upper-left corner of the window. In Finder, your device will appear under Locations in the sidebar.

Step 5. In iTunes or Finder, click on Summary (or General in Finder), and then select Check for Update. If iOS 18 is available, you'll see an option to download and install it.

Step 6. Click Download and Update to start the process. Follow the on-screen instructions, and keep your device connected until the update is complete. The update process may take some time. Your device will restart during the installation, and once it’s done, you should see the updated iOS 18 on your device.

Part 4. Conclusion

Experiencing the "iOS 18 is temporarily unavailable" issue on your iPhone can be frustrating. However, this article gives a comprehensive list of causes and solutions through which you can easily solve the problem. TunesKit iOS System Recovery is your best bet to upgrade to iOS 18 with ease. Hit the download button below to give it a try.