The default settings in your new AirPods 3 may work for you, but If you customize the device, you may enjoy it even more. This paper gives you an idea of the features you can customize and more detailed instructions from Apple in the Hints and some good YouTube videos at the end of the paper.
After charging your new AirPods 3, you’ll need to pair the device with your iPhone. Place the device, while in the case, next to your phone and open the case lid. You should see a pop up on your phone and hit Connect. Your phone will prompt you to tap the charging case back to confirm. Going forward they will connect to your iPhone or iCloud devices when your remove them from the case.
You can change connectivity in Automatic Device Switching. Adjust this in Settings>AirPods name>Connect to This Phone. The toggle between the choices depending on your preference.
Tips for your ears come in a variety of sizes and you will want to do a Fit Test to see if you need to improve the fit of the devices by changing tip sizes. Apple offers five sizes. Even after selecting a size that works for you, the device may have a tendency to fall out after a long wearing or if you are active. Since you want to protect yourself from loosing these you might consider some cords. See helpful links.
After testing the fit, go to AirPods on you Settings Screen and when the AirPods screen opens, you’ll find a number of setting to turn on and off. Clicking on the setting and reading the description below the toggle will tell you what this option does.
Go to Settings>Your AirPods name and click. This line appears on the Home page of settings in about the middle of the page. Here you can take a hearing test which will indicate if you have hearing loss. Based on the test your AirPods will be adjust to help compensate for loss. AirPods Pro 2 and Pro 3 are considered to be medical grade devices.
Notifications can be modified to suit your preferences at Settings>Notifications>Announce Notifications. If you have chosen notification and call announcements, you can also customize the AirPods Pro 3’s head gestures. The feature lets you interact with alerts by nodding or moving your head side to side. You can try and customize these shortcuts by going to AirPods settings and visiting the Head Gestures menu.”
To change many settings use your iPhone and go to: Settings>Accessibility>Accessories>AirPods. This selection is towards the bottom of the screen so scroll down. Here you can change a number of features. You may need to experiment by turning on/off or using a slider to see what works best.
Spatial Audio – toggle on or off and see if you like it with music or other situations.
AirPods 3 offers Translations of languages (Beta) for a number of languages between you and another compatible iPhone. . Download the language you will be using by choosing among Spanish, German, French, Chinese and others. You will need an iPhone 15 Pro or higher, IOS 26x and iPods 4 (ANC), AirPods Pro 2, or AirPods Pro 3. Apple Intelligence must be on and Apple Translate app downloaded on your phone. Once ready, you can press and hold both stems simultaneously to initiate a live translation session. See Helpful Links below for more detail.
Stem settings (the long part of the AirPods) can react to how you have set it to answer calls, end calls and other actions depending on your settings even control you iPhone camera. Your AirPods can even understand head gestures. Find these under Press and Hold and Call Controls or Camera Control.
The AirPods Pro 3 can be charged on a MagSafe or via USB-C. When connected to you iPhone, tapping on you AirPods on the Settings home page will show the status of charging.
Battery – suggest that you use Optimized Charge Limit option in Battery menu in AirPods settings to protect battery health.
Cardio control – this AirPods model collects heartbeat data during workouts. You can change this in Heart Rate toggle in AirPods Settings as it may be redundant if you wear an Apple Watch to do the same thing.
Some helpful links:
https://support.apple.com/en-us/120991 Hearing test
https://support.apple.com/en-us/119849 Fit test
https://support.apple.com/en-us/123185 Translation of languages
And some YouTube videos that offer more details.