How to Change Two Factor Authentication Phone Number on Shopify
If your phone number changed, your Shopify account can still stay secure without losing access.
This guide explains how to change two factor authentication phone number on Shopify, what to do if you are locked out, and how to keep your store protected during the update.
Why your Shopify 2FA phone number matters
Shopify uses two-factor authentication (2FA) to add an extra verification step when you sign in.
When your phone number is tied to SMS-based 2FA or used for account recovery, an outdated number can block login attempts, delay admin access, and create risk during password resets.
Updating your number is especially important if you:
- Changed carriers or mobile numbers
- Lost access to your previous phone
- Need to replace an employee’s admin contact information
- Want to reduce the chance of being locked out during a login challenge
Before you update the number
Before changing the 2FA phone number, confirm you still have at least one way to authenticate.
Shopify accounts often rely on an authenticator app, backup codes, SMS verification, or account recovery methods.
If possible, sign in from a trusted device and location to reduce security checks during the update.
- Keep your new phone active and able to receive text messages.
- Have your Shopify admin credentials ready.
- Save recovery codes if you currently have access.
- Make sure no one else is depending on the old number for security verification.
How to change two factor authentication phone number on Shopify
The exact screen flow may vary depending on whether you use an authenticator app or SMS-based 2FA, but the goal is the same: update the trusted number inside your Shopify account security settings.
Sign in to your Shopify admin
Start by logging in to your Shopify admin using your current credentials.
If Shopify asks for a verification code, complete that step first using your current phone, authenticator app, or backup method.
Open your account security settings
From the Shopify admin, navigate to your account settings or security section.
In many cases, security preferences are tied to your individual user profile rather than the store itself, so the exact menu may appear under your account name or personal settings.
Locate two-factor authentication options
Look for the section related to two-step authentication, two-factor authentication, or login security.
This is where Shopify typically lets you manage verification methods, including changing a phone number used for SMS codes.
Remove the old phone number and add the new one
If SMS verification is enabled, select the option to edit or replace the current phone number.
Enter your new number carefully, including the correct country code, then request a verification code to confirm ownership of the new device.
Once the new number is verified, Shopify should update the authentication method so future codes are sent to the new phone.
Confirm the change
After updating the number, log out and test the sign-in process if possible.
Confirm that the new number receives verification codes and that your backup methods still work.
This simple test can prevent surprise lockouts later.
If you use an authenticator app instead of SMS
Many Shopify users rely on an authenticator app such as Google Authenticator, Authy, or a similar time-based one-time password app.
In that case, the “phone number” may not be the actual 2FA method; it may only be connected to recovery or billing contact details.
If your goal is to change the number associated with account recovery, update the profile contact information in your account settings and keep the authenticator app active on your new device.
If you are moving to a new phone, transfer or re-enroll the authenticator before removing the old device.
- Check whether your app supports account transfer or cloud backup.
- Generate and store new recovery codes if Shopify provides them.
- Do not uninstall the app from the old phone until the new one works.
What if you no longer have access to the old number?
If the old number is unreachable, changing the setting may not be straightforward.
Shopify may require additional verification to prove account ownership before allowing security changes.
This is common for protecting merchants from unauthorized access.
Try these steps:
- Sign in with your authenticator app or backup code if available.
- Use any trusted device already logged into Shopify.
- Check whether another admin on the store can help update the security contact.
- Contact Shopify Support if no self-service option is available.
If you are completely locked out, Shopify Support may ask for business verification details, store ownership information, or other proof before resetting access.
How to avoid being locked out again
Once you update your number, strengthen your account recovery setup so a future phone change does not interrupt business operations.
Shopify security is strongest when multiple methods are available and kept current.
- Use an authenticator app in addition to SMS where possible.
- Store recovery codes in a secure password manager.
- Keep at least two trusted admins on the store.
- Review account contact details whenever staff changes happen.
- Update the number immediately after a phone replacement or carrier switch.
Best practices for Shopify admin security
Changing a 2FA phone number is also a good time to review your broader Shopify admin security posture.
Because Shopify stores handle customer data, payment workflows, and app permissions, strong authentication reduces the chance of account takeover.
Focus on these practices:
- Use unique, strong passwords for every admin user.
- Limit admin access to only the people who need it.
- Review installed apps and remove those no longer in use.
- Audit staff accounts regularly, especially after turnover.
- Enable two-factor authentication for all eligible users.
Common mistakes to avoid
Small errors during a 2FA update can cause unnecessary access problems.
Avoid these common issues when changing your Shopify phone number:
- Entering the wrong country code or digit sequence.
- Deleting the old authentication method before verifying the new one.
- Forgetting to save recovery codes.
- Changing the number without confirming access on the new phone.
- Assuming an authenticator app will automatically move to a new device.
When to contact Shopify Support
Contact Shopify Support if you cannot sign in, cannot verify a new phone number, or no longer have access to any active 2FA method.
Support can explain available recovery options and help you regain access without weakening account security.
Provide clear details such as your store name, login email, and the nature of the access issue.
The more accurate the information, the faster the support process usually moves.
Quick checklist for updating your Shopify 2FA number
- Sign in to Shopify admin
- Open security or account settings
- Find two-factor authentication settings
- Replace the old phone number with the new one
- Verify the new number with a code
- Test login access
- Save backup codes and review recovery options
With the right steps, how to change two factor authentication phone number on Shopify becomes a routine security update rather than a login problem.
Keeping your verification methods current protects access to your store and makes future device changes much easier.