While it may be some time before iOS 18.4 is launched to all iPhone users, those curious to try out the new features can do so by installing the beta. However, doing so may cause some issues, so proceed with caution.
How to install the iOS 18.4 developer beta
As mentioned, you should back up your iPhone before installing the iOS 18.4 beta on your iPhone. I recommend backing up with your Mac or PC using Finder or iTunes. While you can use iCloud to back up your iPhone, this can be tricky with betas: If your iPhone backs up to iCloud while running iOS 18.4, you won't be able to retrieve the data should you need to downgrade to the public iOS version. Backing up to your computer helps to ensure all your data from your iPhone stays intact.
Once you've backed up your iPhone and enrolled your Apple ID, you're ready to install the new developer beta. To install the beta, open Settings > General > Software Update. Below Automatic Updates, you should see an option for Beta Updates. Choose iOS 18.4 Developer Beta, then hit Back. Let iOS load for a moment, and you'll see an option to Download and Install the beta.
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