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Fix: “This Number Is Registered to Your Apple ID But Not With This iPhone” Error

Wondering why you’re seeing a “This number is registered to your Apple ID but not associated with this iPhone” error? 

This problem occurs when you switch carrier providers but retain the same phone number. 

You need to address this issue immediately to stop your iMessage and FaceTime numbers from expiring. 

Let’s get right into it!

TL;DR Version

You can address the “this number is registered to your Apple ID but not associated with this iPhone” error by doing the following:

  1. Check Your Settings
  2. Restart iMessage and FaceTime
  3. Refresh Your Apple ID
  4. Reset Your Network Settings

1. Check Your Settings

The first thing you need to do is check whether your new carrier retained your old number and that it reflects on iMessage on FaceTime. 

Here’s what you need to do: 

  1. Open the Settings app on your iPhone. 
  2. Go to Phone > My Number. 
  3. Make sure that your number is the same with iMessage and FaceTime. 
Check Phone Number
  1. Now, go back to Settings and tap on Messages. 
  2. Access the Send & Receive tab. 
  3. Ensure that your number is there and selected. 
Check iMessage Number
  1. Go to Settings > FaceTime and do the same thing. 
Check FaceTime Number

If your current number doesn’t match your old one, contact your carrier to update it. 

Related: How to Fix Cellular Data Not Working on iPhone


2. Restart iMessage and FaceTime

After asking your carrier to update your number, you need to restart iMessage and FaceTime to force it to update your information. 

Follow the steps below to guide you through the process: 

  1. Go to Settings on your iPhone. 
  2. Next, tap on Messages. 
  3. Tap the toggle switch next to iMessage to turn it off. 
this number is registered to your apple id but not with this iPhone
  1. Go back to the main page and tap on FaceTime. 
  2. Tap the toggle switch beside FaceTime to disable it. 
this number is registered to your apple id but not with this iPhone
  1. Restart your iPhone. 
  2. Go back to Settings and enable FaceTime and iMessage. 

Related: How to Add or Remove SIM on iPhone


3. Refresh Your Apple ID

Once you’ve refreshed FaceTime and iMessage, you need to log out of your Apple ID and log back in again. 

This will force your device to reload your account information with the updated phone number: 

  1. Open the Settings app on your iPhone. 
  2. Tap on your Profile. 
  3. Scroll down and tap on Sign Out. 
this number is registered to your apple id but not with this iPhone
  1. When prompted, provide your Apple ID password. 
  2. Follow the instructions to continue. 

Related: How to Fix ‘Verification Failed: There Was an Error Connecting to the Apple ID Server


4. Reset Your Network Settings

In case you still see the error on your iPhone, I recommend resetting your network settings. 

This should roll back any changes to your network preferences, which include phone numbers, iMessage information, and FaceTime. 

Here’s how you can reset your network settings: 

  1. Open the Settings app on your iPhone. 
  2. Go to General > Transfer or Reset iPhone. 
  3. Tap on Reset. 
  4. Select Reset Network Settings and follow the prompts. 
this number is registered to your apple id but not with this iPhone

Note

  • Your iPhone will immediately restart upon resetting your network configurations. 
  • It may be stuck in the Apple logo. Wait for the process to complete, which usually takes 5 to 10 minutes.

Related: How to Fix iPhone Not Connecting to Known Wi-Fi Network

FAQs

An unstable internet connection is usually the reason your phone number is not verifying. To fix this, you can restart your device and internet connection to ensure that there are no temporary bugs or errors on both of your devices. 
1. Use the SIM eject tool into the small hole of the SIM, then try and push it in to eject the SIM tray. 
2. Next, remove the SIM tray from your iPhone. 
3. Place your SIM in the tray and make sure it’s oriented correctly. 
4. Put back the SIM tray into your iPhone. 
5. Wait for the SIM-detected prompt and follow the instructions to continue.
If your carrier supports it, you can convert your old physical SIM to an eSIM on a supported iPhone model. 

1. Go to Settings on your iPhone. 
2. Tap on Cellular > Set Up Cellular or Add eSIM.
3. Choose the number with the physical SIM. 
4. Tap Convert to eSIM and follow the prompts.
Your iPhone needs a physical SIM or eSIM to connect to a cellular network. On iPhone 14 and later models purchased in the US, you can only use eSIM. Contact your carrier to get a SIM and set up cellular service. 
No. Only compatible SIM cards from supported network providers may be used to activate your iPhone. The latest iPhone models use nano SIM cards, while iPhone models from the US only support eSIM. 

If this guide helped you, please share it. 

Author

  • John Sixto

    John is a staff writer at Saint and comes from a SAP ABAP development background. He has a Bachelors in IT and has been writing since 2018, with over 500 posts published. He loves to build PCs and has a deep curiosity in understanding how different components and configurations work. John spends hundreds of hours at a time, researching and testing the software and apps, before he proceeds to write about it. LinkedIn X (Twitter) Website

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