AIRTAG - how do changing phone # tied to airtag?

Hello ScottGjerdingen,

That's a fantastic question! The AirTag will associated to your Apple ID username and the phone number associated to your Apple ID. If you're using Dual SIM on your iPhone and the second number was the number in use at the time yo used up the AirTag, this may be why it associated to that number. Removing the AirTag from Find My, switching to your preferred phone number on the iPhone, then setting up the AirTag again may help with resolving this issue. You can find the steps for switching between your phone numbers listed below and in the following article.

Switch phone numbers for a call

1. "Tap the Info button .
2. Tap the current phone number. 
3. Tap your other number."

"If you're using the keypad, follow these steps:

1. Enter the phone number.
2. Tap the phone number, near the top of the screen. 
3. Tap the number that you want to use."

Using Dual SIM with an eSIM

You can find the steps for removing an AirTag from Find My on iPhone, and setting up your AirTag again via the links below. These steps should help with updating the contact information.

Remove an AirTag or other item from Find My on iPhone

Set up your AirTag using your iPhone, iPad, or iPod touch

Let us know how that goes!

ScottGjerdingen,

Thank you for that clarification. It could be that the number the AirTag is associating with is listed on your Apple ID as the trusted phone number for your Apple ID under two-factor authentication. You can take a look at this article to check your trusted phone numbers and add additional numbers to your Apple ID.

Two-factor authentication for Apple ID - Apple Support

Best regards.