Apple has started rolling out iOS 26.3 Developer Beta 2 for iPhone, continuing its work on refining the update ahead of its public release. While this beta doesn’t introduce many big, headline features, it focuses on system improvements, bug fixes, and a number of under-the-hood changes that hint at what Apple is preparing next.

From messaging upgrades to better device support and overall stability improvements, here’s everything new in iOS 26.3 Beta 2.

Things to Consider Before Installing Beta Updates

Before you jump into the installation process, take note of the following precautions:

Check device compatibility: iOS 26 supports only iPhone 11 and newer models. If you’re using an older device, you won’t be able to see the update.
Expect bugs and instability: Developer betas often contain glitches, performance issues, and compatibility problems with the app. Avoid installing on your daily-use iPhone unless you’re prepared for hiccups.
Back up your data: Always create a full backup of your iPhone via iCloud, Finder (on Mac), or iTunes (on Windows). This way, you can revert to iOS 18 if needed without losing important data.
Use Wi-Fi for downloads: Though mobile data works, Wi-Fi is more stable and faster, especially for large beta updates.
Charge your iPhone: Ensure your device has at least 50% battery or keep it plugged into power during the installation.

How to Download iOS 26.3 Developer Beta 2 on iPhone

Installing the iOS 26.3 beta 2 is now easier than ever. You no longer need a paid developer account or a beta profile configuration. Here’s how to get started:

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Step 1: Enroll in the Apple Developer Program

Download and install the Apple Developer app from the App Store.
Open the app and tap the Account tab in the bottom menu bar.
Now, tap Sign in to sign in with your Apple Account.
Next, tap Enroll Now.
Hit the Continue button on the Program Membership Benefits screen and follow the on-screen instructions.
Once you’re on the payment screen, tap Cancel. You no longer have to be a paying member to install beta updates.

Step 2: Enable and Install iOS 26 Developer Beta 3

Open Settings → General → Software Update.
Here, tap on Beta Updates.
Select the iOS 26 Developer Beta option on the next menu and tap Back.
Finally, tap Download and Install when the iOS 26 Developer Beta appears.

Your iPhone will automatically download and install the beta. The process may require multiple restarts, so don’t worry if your screen briefly goes dark.

That’s it. You’ve successfully installed the iOS 26.3 developer beta 2 on your iPhone. Enjoy the new features, test out apps, and get an early feel for what’s coming in the fall.