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watchOS 26 Announced: Supported Devices, How to Install, and Key Precautions

At WWDC 2025, Apple officially unveiled watchOS 26, bringing exciting new features and performance enhancements to the Apple Watch lineup.

Whether you’re a developer, an early adopter, or simply curious, this guide will walk you through everything you need to know — from device compatibility to installing the developer beta, along with crucial precautions before diving in.

Supported Devices for watchOS 26

Apple continues its strong support for older devices while introducing improvements tailored for the latest Apple Watch models. Here’s the full list of Apple Watches compatible with watchOS 26:

  • Apple Watch Series 6
  • Apple Watch Series 7
  • Apple Watch Series 8
  • Apple Watch Series 9
  • Apple Watch SE (2nd generation)
  • Apple Watch Ultra
  • Apple Watch Ultra 2

Note: The Apple Watch Series 4, Series 5, and the first-generation SE are no longer supported with watchOS 26.

How to Install watchOS 26 Developer Beta

To install watchOS 26, your iPhone must be running iOS 26 Developer Beta. Here's a step-by-step guide:

Step 1: Enroll in Apple’s Developer Program

  1. Visit developer.apple.com and sign in with your Apple ID.
  2. Enroll in the Apple Developer Program (cost: $99/year).

Step 2: Install iOS 26 Developer Beta on Your iPhone

  1. Go to Settings > General > Software Update.
  2. Tap on Beta Updates and select iOS 26 Developer Beta.
  3. Download and install the update. Your phone may restart multiple times.

Step 3: Install watchOS 26 Developer Beta

  1. Ensure your Apple Watch is paired with your iPhone running iOS 26 beta.
  2. Open the Watch app on your iPhone.
  3. Go to General > Software Update.
  4. Enable Beta Updates and select watchOS 26 Developer Beta.
  5. Make sure the watch is on its charger and has at least 50% battery.
  6. Tap Download and Install to begin the update process.

Important: Once watchOS 26 is installed, you cannot downgrade to watchOS 10 or earlier versions without visiting Apple Support. Install only if you’re ready for a developer beta experience.

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Precautions Before Updating

Before you jump into the world of beta software, it’s important to understand the risks and take appropriate steps:

  • Backup Your Data: Ensure your iPhone is backed up via iCloud or iTunes. Although Apple Watch backups are automatic and tied to your iPhone, having a backup helps restore your data if anything goes wrong.
  • Expect Bugs: Developer betas are early versions. Apps may crash, features may break, and battery life can be unpredictable.
  • No Downgrade Path: You cannot revert your Apple Watch to an older watchOS version. Proceed only if you understand this limitation.
  • For Developers Only: The beta is intended for developers to test their apps. If you're not a developer, consider waiting for the public beta or the final release in fall 2025.
  • App Compatibility: Some third-party apps may not work properly under beta software. Expect occasional glitches.

Final Thoughts

watchOS 26 sets the stage for an even smarter, faster, and more capable Apple Watch experience. However, beta software is not for the faint of heart. If you rely on your Apple Watch for daily tasks, it's wise to wait until the public beta or official release later this year.

Stay tuned to imatios.com for more updates on watchOS 26 features, public beta availability, and performance reviews as they unfold.