Apple released iOS 18.6 on July 29, 2025, delivering essential security updates and bug fixes for iPhone users. This update focuses on keeping your device safe and stable, with no major new features. It’s a must-install for all compatible iPhones to protect against active exploits and improve performance. Below, we break down what’s new, how to update, why it’s urgent, and which devices are supported.
What’s Included in iOS 18.6?
Security Updates
iOS 18.6 patches over 20 vulnerabilities, including a critical zero-day flaw (CVE-2025-6558) already being exploited, as noted by Google’s Threat Analysis Group. This flaw in the ANGLE graphics layer could allow attackers to run malicious code via HTML pages. Other fixes address issues in WebKit (Safari’s engine), CoreMedia, and CFNetwork. For example, a WebKit flaw (CVE-2025-4322) could expose sensitive data, and an accessibility issue could let VoiceOver read passcodes aloud. Check Apple’s official support page for the full list: Apple Security Updates.
Bug Fixes
The update resolves several issues, including:
- Photos App: Fixes a bug that stopped memory movies from being shared.
- Mail App: Corrects freezing problems.
- Wi-Fi: Resolves connectivity issues.
- Battery: Addresses excessive drain for better performance.
For EU users, iOS 18.6 improves the process for installing third-party app stores and apps from developer websites, complying with new regulations.
How to Update to iOS 18.6
To install iOS 18.6:
- Open Settings on your iPhone.
- Tap General.
- Select Software Update.
- Tap Download and Install if iOS 18.6 appears.
- Follow the prompts to complete the update.
The update (build 22G86) is about 800MB to 1.07GB, depending on your device. Ensure a stable Wi-Fi connection and at least 50% battery. Back up your data to iCloud or iTunes first. If the update doesn’t show, try again later, as rollouts can take time.
Tips for a Smooth Update
- Backup First: Save data to prevent loss.
- Stable Wi-Fi: Avoid interruptions during download.
- Charge Device: Keep your iPhone plugged in or charged.
- Free Storage: Delete unused apps or media if needed.
- Be Patient: Older devices may take longer to update.
Why You Should Update Now
The zero-day flaw (CVE-2025-6558) makes updating urgent, as it’s actively exploited. Attackers could access your device if unpatched. Experts, including Google’s Threat Analysis Group, recommend immediate action. The update also fixes performance issues like app crashes, Wi-Fi drops, and battery drain, ensuring a smoother experience.
Compatible Devices
iOS 18.6 supports iPhone XS and later, including:
- iPhone XS, XS Max, XR
- iPhone 11, 11 Pro, 11 Pro Max
- iPhone 12, 12 mini, 12 Pro, 12 Pro Max
- iPhone 13, 13 mini, 13 Pro, 13 Pro Max
- iPhone 14, 14 Plus, 14 Pro, 14 Pro Max
- iPhone 15, 15 Plus, 15 Pro, 15 Pro Max
- iPhone 16, 16 Plus, 16 Pro, 16 Pro Max
For iPads, iPadOS 18.6 supports iPad Pro (3rd gen+), iPad Air (3rd gen+), iPad (7th gen+), and iPad mini (5th gen+). Older devices may need iPadOS 17.7.9.
| Device Type | Compatible Models |
|---|---|
| iPhone | XS, XS Max, XR, 11 series, 12 series, 13 series, 14 series, 15 series, 16 series |
| iPad | Pro (13-inch, 12.9-inch 3rd gen+), Pro (11-inch 1st gen+), Air (3rd gen+), 7th gen+, mini (5th gen+) |
Looking Ahead: iOS 26
iOS 18.6 is likely the last major update before iOS 26, expected in September 2025. iOS 26 will bring a Liquid Glass redesign and expanded Apple Intelligence features but will only support iPhone 11 and newer, dropping support for iPhone XS, XS Max, and XR. Learn more about iOS 26 in our post: iOS 26 Beta 2: Download and Features.
Troubleshooting Update Issues
If you face problems after updating:
- Restart: Reboot your iPhone to fix minor issues.
- Check Updates: Go to Settings > General > Software Update for the latest version.
- Reset Settings: Navigate to Settings > General > Reset > Reset All Settings (won’t delete data).
- Contact Apple: Reach out to Apple Support if issues persist.
Frequently Asked Questions
Does iOS 18.6 add new features?
No, it focuses on security and bug fixes. New features are expected in iOS 26.
How do I check if I have iOS 18.6?
Go to Settings > General > About. Look for version 18.6 (build 22G86).
What if I skip iOS 18.6?
Your iPhone risks security breaches and performance issues like app crashes.
Can I downgrade from iOS 18.6?
Apple typically blocks downgrades after security updates.
Does iOS 18.6 include Apple Intelligence?
No, Apple Intelligence starts with iOS 18.1 and expands in iOS 26.
Why This Matters for You
For iPhone XS, XS Max, or XR users, iOS 18.6 is critical, as it’s likely their last major update before losing support in iOS 26. It ensures these devices stay secure and stable. For all users, this update protects against active threats and improves daily use, making it a practical step before iOS 26’s major changes. For other device updates, see:
