1. Apple Releases iOS 18 Developer Beta 4:
- Apple has released the fourth developer beta of iOS 18, the upcoming major update for the iPhone operating system.
- The new beta includes several new features and improvements, such as updates to the Messages app, the Health app, and the Wallet app.
- Developers can now download and install the iOS 18 Developer Beta 4 on compatible iPhone models to test the new features and provide feedback to Apple.

2. What's New in iOS 18 Developer Beta 4:
- The Messages app has received improvements to the search functionality, allowing users to more easily find specific messages or attachments.
- The Health app has been updated with new features for tracking sleep and fitness data, as well as improved integration with third-party health and fitness apps.
- The Wallet app now supports additional types of passes, such as event tickets and loyalty cards, making it more convenient for users to manage their digital items.

3. How to Install iOS 18 Developer Beta 4:
- The iOS 18 Developer Beta 4 is currently only available to registered Apple developers.
- To install the beta, developers need to have a compatible iPhone and a valid Apple Developer account.
- Once downloaded, the beta can be installed using the Apple Developer app or by manually installing the beta profile on the device.