ReserveSMS

How to change the trusted phone number on your Apple Account

Updated 7 November 2026 · The ReserveSMS team

In short

  • On iPhone, go to Settings, your name, Sign-In & Security, Two-Factor Authentication, then Add a Trusted Phone Number.
  • You must keep at least one trusted number, so add and verify the new one before removing the old.
  • Apple suggests adding another number you can reach, such as a home phone or a family member’s.

Apple sends two-factor codes to your trusted devices and trusted phone numbers. If your number changes, update it before the old one goes.

On iPhone or iPad

Go to Settings, then your name, then Sign-In & Security, then Two-Factor Authentication, and tap Add a Trusted Phone Number.

On a Mac

Choose Apple menu, then System Settings, then your name, then Sign-In & Security, then Two-Factor Authentication, and click Add a Trusted Phone Number.

On the web

At account.apple.com, go to Sign-In and Security, then Account Security, to add and remove trusted numbers.

Add first, then remove

With two-factor authentication you need at least one trusted number, and a single number can’t be removed. Add the new number, verify it by text or automated call, then remove the old one.

A second number

Apple suggests verifying another number you can reach, such as a home phone, or one used by a family member or close friend.

Lost the old number already?

If you can still use a trusted device, add the new number from it. If not, see getting back in without your number.

Not a one-time number

Don’t make a one-time number your trusted number: a number from ReserveSMS receives codes for 20 minutes only.

Common questions

How do I change my trusted phone number on iPhone?

Go to Settings, your name, Sign-In & Security, Two-Factor Authentication. Add the new number, verify it, then remove the old one.

Why can’t I remove my trusted phone number?

Apple needs at least one trusted number for two-factor authentication. Add another number first.

Can I use a family member’s number as a trusted number?

Yes. Apple suggests verifying another number you can reach, such as a family member’s or close friend’s.

Numbers for the apps in this guide

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