A primary phone number is the main contact number tied to your online accounts, used for sign-in, account recovery, and receiving two-factor authentication (2FA) codes. For services like Apple, Google, and Microsoft, this number acts as a critical security anchor, ensuring you can verify your identity and regain access if you ever get locked out.
What is a primary phone number?
A primary phone number is the single, main contact number associated with an online account or service. It is the number you use to sign in, recover a forgotten password, and receive verification codes for two-factor authentication (2FA). For example, with an Apple ID, a mobile phone number can even serve as your primary sign-in ID if your account was created in China mainland or India. On Google and Microsoft accounts, it functions the same way: it is the number the platform trusts most to confirm your identity. For SimpliSafe, 'Primary Contacts' are the phone numbers called first after an alarm sounds, before emergency services are requested. In a general contact sense, it is also the number you most frequently take calls from and should monitor daily for voice messages or missed calls.
Why your primary phone number matters for security
Your primary phone number is your first line of defense against account lockouts. It is used to verify your identity when you sign in from a new device, reset your password, or receive security alerts about suspicious activity. For Apple IDs, Apple recommends having multiple trusted phone numbers for two-factor authentication, including one not associated with your primary device, in case your main device is lost or damaged. Without a current primary number, you risk being permanently locked out of your account if you forget your password or lose access to your email. It also ensures you receive time-sensitive alerts, such as login attempts from unrecognized locations.
How to change your primary phone number on an Apple ID
To change the primary phone number for your Apple ID on an iPhone, iPad, or Mac, follow these steps:
- Open Settings and tap your name at the top.
- Tap Sign-In & Security.
- Tap your current primary phone number.
- Select Remove from Account to remove it, or toggle off Primary Phone Number to choose a new one.
Keep in mind that the new number cannot already be in use by another Apple Account. If you are removing a number, ensure you have another trusted number saved first.
How to change your primary phone number on a Google account
To update your Google Account phone number, go to myaccount.google.com and follow these steps:
- Tap Personal info.
- Tap Phone.
- Select the number you want to change.
- Use the Edit (pencil icon) to update the number, or Delete (trash can icon) to remove it.
If you manage a Google Business Profile, log in to the associated Google account, go to the Google Business Profile dashboard, click Information, scroll to the Phone section, click the pencil icon, enter the new number, and click Apply or Save. Edits to Google Business Profile phone numbers are subject to review by Google and may be rejected or automatically updated.
How to manage your primary phone number on a Microsoft account
For a personal Microsoft account, go to Manage how you sign in to Microsoft (account.live.com/names/manage). Select Add phone number, verify it, and then select Make primary. Note that a primary alias (phone or email) cannot be removed until another email address or phone number is added and set as primary. However, there is a conflict in Microsoft’s guidance: some documentation allows adding a phone number as a new security method, while other articles state that for increased security, personal accounts can no longer add a phone number as a new security method, recommending authenticator apps or passkeys instead. For Microsoft 365 business accounts, the "Work phone" in a user's profile is typically managed by the organization's IT administrator through the Microsoft 365 admin center.
Frequently Asked Questions
What is the difference between a primary phone number and other numbers on my account?
A primary phone number is the main number used for sign-in, recovery, and 2FA.
Can I transfer my primary phone number to a new carrier?
Yes, you can port your primary phone number to a new carrier. After the transfer, you will need to update it on all your accounts to avoid losing access.
What should I do if my primary phone number is already in use on another account?
If the number is already associated with another Apple Account, you cannot use it as your primary number. For Microsoft accounts, transferring it may involve specific on-screen options or a 30-day waiting period if a direct transfer option is not available.
How do I handle phone number formats and digits when updating my account?
Always enter your number exactly as required by the platform, including country code. Incorrect phone number formats and digits can prevent verification codes from being delivered.
What is involved in removing phone numbers from accounts?
Removing phone numbers from accounts is straightforward: go to the security or personal info section, select the number, and choose delete or remove. Ensure you have another trusted method (like a backup number or authenticator app) before removing the primary one.
How do I go about updating phone number on apps?
Updating phone number on apps typically requires you to change it in the app’s account settings or security section. Most apps sync with your Apple ID, Google Account, or Microsoft account, so updating the primary number there often updates it across linked apps.
Can I recover Google account without phone number and recovery email?
Recovering a Google account without phone number and recovery email is extremely difficult. Google offers alternative recovery paths, such as answering security questions or using a trusted device, but these are not guaranteed. It is critical to keep at least one recovery method current.
