How to update iOS on iPhone

Complete guide with multiple methods and troubleshooting for updating iOS on iPhone.

7-10 min read
Expert Verified
Last Updated: August 2025

Quick Answer

Updating iOS on your iPhone is essential for accessing new features, security updates, and performance improvements. You can update your iPhone either directly through the device or using a computer with iTunes or Finder.

Easy⏱ 7-10 min read

Prerequisites & Requirements

Before updating your iOS, ensure you meet the following requirements:
  • •iPhone model compatible with the latest iOS version (e.g., iPhone 6s or later for iOS 15).
  • •At least 50% battery charge or connect to a power source during the update.
  • •Stable Wi-Fi connection for downloading the update.
  • •Sufficient storage space (at least 1-2 GB free, depending on the update size).
  • •Backup important data via iCloud or iTunes to prevent data loss.

Method 1: Updating iOS Directly on iPhone

This method is the most straightforward and can be used when you have a stable Wi-Fi connection and sufficient battery life.
  • •Step 1: Open the 'Settings' app on your iPhone.
  • •Step 2: Scroll down and tap on 'General'.
  • •Step 3: Tap on 'Software Update'. Your iPhone will check for available updates.
  • •Step 4: If an update is available, tap 'Download and Install'. You may need to enter your passcode.
  • •Step 5: Once the download is complete, tap 'Install Now'. Your device will restart to complete the update.
  • •Step 6: After the update, verify by going back to 'Software Update' to see if it shows 'Your software is up to date'.
  • •Step 7: If the update fails, check your internet connection and available storage.

For Windows 11

If you are using a Windows 11 computer to update your iPhone via iTunes, follow these steps:
  • •Step 1: Connect your iPhone to your Windows 11 PC using a USB cable.
  • •Step 2: Open 'iTunes' (ensure you have the latest version).
  • •Step 3: Select your device icon in the upper-left corner.
  • •Step 4: Click on 'Summary' in the left sidebar.
  • •Step 5: Click 'Check for Update' and then 'Download and Update' if an update is available.
  • •Step 6: Follow the on-screen instructions to complete the update.

For Windows 10

Updating your iPhone on Windows 10 is similar to Windows 11 but may have slight interface differences:
  • •Step 1: Connect your iPhone to your Windows 10 PC using a USB cable.
  • •Step 2: Open 'iTunes' (ensure you have the latest version).
  • •Step 3: Click on the device icon in the top left corner.
  • •Step 4: Select 'Summary' from the left sidebar.
  • •Step 5: Click 'Check for Update' and then 'Download and Update' if prompted.
  • •Step 6: Follow the prompts to complete the update.

Method 2: Updating iOS Using Finder on macOS Catalina and Later

Use this method if you are on macOS Catalina or later and prefer to update via Finder.
  • •Step 1: Connect your iPhone to your Mac using a USB cable.
  • •Step 2: Open 'Finder' from the Dock.
  • •Step 3: Select your iPhone from the sidebar under 'Locations'.
  • •Step 4: Click on 'General' in the Finder window.
  • •Step 5: Click 'Check for Update' and then 'Download and Update' if an update is available.
  • •Step 6: Follow the on-screen instructions to complete the update.

Troubleshooting Common Issues

If you encounter problems during the update process, consider the following solutions:
  • •Error: 'Unable to Check for Update' - Solution: Ensure your device is connected to Wi-Fi and restart your iPhone.
  • •Issue: 'Not Enough Storage' - Fix: Delete unnecessary apps, photos, or videos to free up space.
  • •Problem: 'Update Failed' - Workaround: Restart your iPhone and try the update again, or use iTunes/Finder to update instead.

Advanced Tips & Shortcuts

For power users looking to optimize their update process:
  • •Keyboard shortcut: Command + R (Mac) or Ctrl + R (Windows) - Refreshes the iTunes/Finder window.
  • •Command line: Use 'ideviceinstaller' to check for updates via terminal (requires installation of libimobiledevice).
  • •Hidden feature: Enable 'Automatic Updates' in Settings > General > Software Update to receive updates automatically.

Common Mistakes to Avoid

Avoid these common pitfalls:

Expert Tips

Regularly updating your iPhone ensures you benefit from the latest features and security enhancements, which is crucial for device performance.