How to stop watch SE series

Hi lewanne208,

Thanks for reaching out to Apple Support Communities!

If you activated Cellular Services & Mobile Data on your Apple Watch, contact your carrier to stop your plan.

To remove Cellular Services from Apple Watch:

1. Open Watch on your iPhone
2. Go to General
3. Scroll to the bottom and tap Reset
4. Tap Remove All Data Plans
5. Tap Remove All Data Plans again

Note: Removing All Data Plans from Apple Watch doesn't cancel your carrier plan. To cancel your plan, contact your carrier.

To stop getting calls from your iPhone to your Apple Watch:

1. Open Watch on your iPhone
2. Scroll down and tap Phone
3. Tap Custom
4. Select Notifications Off
5. Toggle Off Sound and Haptic at Alerts
6. Toggle Off Sound and Haptic at Ringtone