Introduction
Apple has officially rolled out the iOS 18.4 update, and it brings a host of new features, improvements, and security enhancements for iPhone users. The update, which began rolling out globally in April 2025, is designed to enhance user experience while maintaining Apple’s signature focus on privacy and performance.
This blog post breaks down everything you need to know about iOS 18.4, from key features to supported devices and how it impacts your daily phone use.
Key Features of iOS 18.4
1. Enhanced Siri with AI Upgrades
iOS 18.4 integrates Apple’s new language processing model into Siri. The assistant now offers more natural interactions, context-aware suggestions, and on-device processing to improve response time and privacy.
- Smarter voice replies
- Contextual understanding of past queries
- Improved multitasking support
2. Battery Health Management
Apple has refined its battery health tracking tools, allowing users to see more detailed analytics on battery usage and long-term health indicators. There’s also an automatic battery optimization system that adapts to your charging routine.
3. Lock Screen Widgets & Customization
Users now have more control over their lock screen with interactive widgets, new clock styles, and dynamic wallpapers.
- Widgets can now show live updates
- New font and color customizations
- Always-On Display improvements for supported devices
4. Safari Intelligence Features
The Safari browser in iOS 18.4 gets a major boost with:
- AI-powered content summaries
- Focused reading mode
- Privacy-enhancing features like automatic tracker blocking
5. Health App Enhancements
iOS 18.4 introduces new metrics in the Health app, including:
- Mood tracking integration with Apple Watch
- Medication adherence reminders
- Advanced menstrual cycle tracking
6. Improved App Store Search
The App Store now includes smarter keyword recognition, better personalized suggestions, and AI-based editorial recommendations to help you find relevant apps faster.
Performance and Security Improvements
iOS 18.4 includes over 30 bug fixes and security patches. Key improvements include:
- Faster Face ID recognition
- Reduced app launch times
- Improved data encryption for iCloud sync
- Fixes for Bluetooth connectivity and CarPlay bugs
Supported Devices
iOS 18.4 is compatible with iPhone models from the iPhone 11 and newer. iPhone SE (2nd and 3rd Gen) users also receive full support.
How to Update
To install iOS 18.4:
- Go to Settings
- Tap General > Software Update
- Download and install iOS 18.4
Make sure your device is charged and connected to Wi-Fi before beginning the update.
Conclusion
The iOS 18.4 update is more than just a routine refresh—it’s a meaningful step forward in Apple’s vision for intelligent, secure, and user-friendly mobile experiences. Whether you rely on Siri, browse often with Safari, or need better battery insight, this update brings something useful for everyone.
As Apple continues to bridge AI enhancements with user control, iOS 18.4 lays the groundwork for what’s next in the iPhone ecosystem.