Guide · updated November 2026

Instagram says this phone number is already in use

By the Noir SMS team3 min read

Quick answer

Instagram links each phone number to one account at a time for sign-up and recovery. If it says the number is already in use, either you have an old account on it, or someone used it before you, which is common with recycled numbers. Log in to the old account and remove the number, recover it with 'Forgot password', or use another number. With a Noir SMS number, cancel and get a fresh one.

This message appears when you sign up or add a phone in settings. It's not an error with your number; it's Instagram telling you another account is already using it. Here's how to sort it out.

Why it happens

  • You created an account with this number years ago and forgot about it.
  • The number was recycled and its previous owner still has it on their Instagram.
  • A friend or family member added your number to their account.

If the old account is yours

Use 'Forgot password' with the number to get a login link. Once inside, go to Accounts Center, Personal details, Contact info, and remove the number or keep that account.

If it isn't yours

You can't remove a number from someone else's account. Use a different number for your account, or sign up with an email instead. If it's your new SIM and you need that number on Instagram, contact Instagram support.

With a temporary number

Popular numbers are recycled often. If Instagram says the Noir SMS number is in use, cancel it after 2 minutes for a refund, as long as no code arrived, and try another number.

Frequently asked questions

Can two Instagram accounts share a phone number?

Instagram generally links a number to one account for sign-up and recovery.

Can I sign up with email instead?

Yes. Email sign-up avoids the problem entirely.

Will the other person see my account?

No. Instagram doesn't connect your account to theirs.

Do I get a refund?

If no code arrived, cancel after 2 minutes for an instant refund.

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