Wearables

Apple Watch Series 12 and Ultra 4: Settings to Change

9to5Mac shares setup changes to unlock new health complications, music detection, and more on your new Apple Watch.

If you upgraded to an Apple Watch Series 12 or Ultra 4, you might not notice the new features right away. 9to5Mac reports that a few setup changes can help you get more out of the upgrade.

Add New Complications

Start with complications that are exclusive to the new models. According to 9to5Mac, Series 12 and Ultra 4 can display your live heart rate, step count, and readiness score on the watch face. These give you real-time insight into your health and fitness.

Enable Swipe to Switch Watch Faces

By default, the ability to swipe between watch faces is turned off. To enable it, go to Settings > Clock > Swipe to Switch Watch Face. 9to5Mac recommends this for quicker access to different faces.

Turn On Music Detection

Your new Watch can identify music playing around you without asking Siri or tapping Shazam. 9to5Mac says to open Settings > Smart Stack and enable Music Detection. Once on, the Smart Stack will show the song title and artist when it hears music.

Set Up Readiness Score

The readiness score needs data to work. 9to5Mac notes that you must complete your Health Details, set up Activity and overnight vitals, and enable Sleep tracking. You also need to wear the Watch while sleeping for at least seven nights and have sleep data from the previous night. Find a charging window during the day so overnight tracking is easier.

Use the Vitals App

Series 12 and Ultra 4 have additional insight in the Vitals app. 9to5Mac reports that you can see daytime vitals based on heart rate and recovery heart rate variability, plus overnight vitals including respiratory rate and wrist temperature.

What's Coming

9to5Mac mentions that future updates will bring Siri Recap and Live Rewind to Series 12 and Ultra 4. For now, these setup changes make the most of your new watch.

  • Apple Watch
  • complications
  • health tracking
  • Series 12
  • Ultra 4
  • watchOS

About Carmen Ruiz

Carmen Ruiz writes Do This Today, the site's daily settings and security tip. She ran the help desk for a Phoenix-area school district from 2013 to 2025, supporting about 30,000 student and staff devices. She is based in Phoenix. Areas of expertise: iPhone and Android settings, account security, passwords and two-factor authentication, home Wi-Fi, software updates, parental controls.