What Apple Checks When You Add a Number
Apple ID is now called Apple Account, and you still sign in with the same email address or phone number and password. The phone-number step looks at a few things.
Line type. Apple doesn’t document which line types it accepts. For a number you access through an app or dashboard, what counts is how the carrier classifies the line, not the product name.
Country code. In China mainland, you might be required to provide a +86 number, as noted in Apple’s account creation guide.
Delivery method. When adding a trusted number for two-factor authentication, Apple lets you choose a text message or a phone call. Both deliver a short verification code you must enter to confirm the number.
Numbers already in use. Apple describes, without giving the exact wording, a message that the email or phone number is unavailable or can’t be used when another Apple Account already uses it. A number another account already uses can’t be used for a new one.
Apple says two-factor authentication needs at least one trusted phone number where you can receive verification codes. If an account was created with two-factor authentication, it can’t be removed, so the account always needs at least one trusted number.
Which Numbers Work for Apple ID Verification
The table sums up how each line type tends to fare at the phone-number step. “Accepted” reflects how carriers classify the line, not a published Apple rule.
| Number type | Accepted | Notes |
|---|---|---|
| Non-VoIP mobile (US or Australian) | Yes | Carrier classifies it as a mobile line; works consistently across sign-up and 2FA |
| Non-VoIP mobile (other countries) | Depends | Passes if listed as mobile by the carrier; in China mainland a +86 number might be required |
| VoIP / online number | Often refused | Apple doesn’t document its rules for these lines |
| Landline | Uncertain | Can receive a voice-call code; Apple mentions home phones as an example of an additional trusted number, but a landline may not pass the initial sign-up check |
| Public receive-SMS site | Often refused | Shared by many people, and a number another Apple Account already uses can’t be used |
A virtual number gets through once the underlying carrier has it on record as a non-VoIP mobile line. “Virtual” describes how you access the number — through an app or web dashboard — not how the carrier classifies it. That distinction explains why two numbers from different providers can behave completely differently at the same verification screen.
How to Register an Apple ID on a Second Number
Obtain a non-VoIP mobile number you can access reliably. A one-time activation number works for the initial code, but a number you keep long-term is safer, because Apple sends sign-in codes to your trusted devices or the trusted number.
Confirm the number is live before opening the sign-up flow. Send yourself a test SMS from another device to confirm it is receiving messages now.
Open the correct sign-up surface. Use Apple’s account website or the App Store or Mac sign-up flow. On the web, you enter a phone number that you can always access and verify both your email address and your phone number.
At the “Confirm your phone number” screen, enter the number with the correct country code. Select text message or phone call — whichever the number receives more reliably.
Enter the verification code when it arrives. If it does not arrive, request the code again or switch between text message and phone call.
Once inside the account, add a second trusted number immediately. Apple recommends adding a number not associated with your iPhone as an additional trusted number. This prevents a lockout if the first number ever becomes inaccessible.
Errors You May See During Apple ID Phone Verification
For errors not listed here, Apple’s account troubleshooting page is the most reliable reference.
Your account cannot be created at this time
Your account cannot be created at this time.
This is the message Apple documents when an account can’t be created. Apple doesn’t publish a phone-specific reason for it, so follow the steps on its troubleshooting page linked above.
Number or email already in use
Apple describes this situation without publishing the exact wording: the phone number or email is unavailable or can’t be used because another Apple Account already uses it. Switching to a different mobile (non-VoIP) number is the practical next step.
Verification code not arriving (no on-screen error)
When signing in, use “Didn’t Get a Code?” to get a text message or phone call to the trusted number, or check any Apple device already signed in to the account, since sign-in codes can also appear there. At sign-up, if neither a text nor a call arrives, try a different number.
Common mistake: Entering the number without its country code. Check the country code before you request a code.
Keeping Your Apple Account After Sign-Up
Because Apple requires at least one trusted phone number at all times and a single trusted number cannot be removed, the number you register stays on the account unless you add a second one first. Apple notes that a phone number can help to verify your identity and recover your account, so the trusted number matters long after sign-up. Whether iMessage can run without a phone number is a separate question, answered on the page about using iMessage without a number. Apps you sign in to with Apple may still run their own phone check, as Tinder’s phone verification shows.
One-time activation vs. rental. A one-time activation number stops working soon after the first code, so it cannot receive future sign-in codes. A rented number stays yours for the rental period, so it can receive codes while you add a second trusted number you control.
Decision framework:
- If you used a one-time activation number and still have access to it: add a reliable second trusted number now, before the first one expires or gets reassigned.
- If you used a one-time activation number and have already lost access to it: you are dependent on trusted devices for sign-in codes. Apple’s trusted numbers page, linked above, explains how trusted devices and numbers work.
- If you are using a rented number you keep long-term: you can receive future sign-in codes normally and add a second trusted number before eventually dropping the rented one.
The FTC explains how two-factor authentication protects your accounts. If the trusted number is a line you own, the FCC covers keeping your phone number when you change providers.
Frequently Asked Questions
Can I create an Apple ID without providing any phone number?
On iPhone, Apple says you “might be asked to enter your phone number” later, so it is not always required at creation. The web flow and the App Store and Mac flows include a phone-number step. Creating an Apple ID without a phone number is covered separately.
Why is my virtual number being refused?
Apple doesn’t document which line types it refuses. In practice, internet-based (VoIP) lines and numbers anyone can read on receive-SMS pages often fail here, and a number another Apple Account already uses can’t be used. Check how the carrier classifies the line before you try again.
Is Apple ID the same as Apple Account?
Yes. Apple renamed Apple ID to Apple Account. You still sign in with the same email address or phone number and password, and the phone-number rules above apply to both names.
Can I add a second trusted number?
Yes. Apple suggests adding a number not associated with your iPhone as an additional trusted number, and verifying other numbers you can access, such as a home phone. A single trusted number can’t be removed, so add the second one before you drop the first.
What happens if I lose access to the number I used for two-factor authentication?
If you have a trusted device already signed in to the account, you can still receive sign-in codes and add a new trusted number from within account settings. Without a trusted device or access to the trusted number, you will need Apple’s account recovery process; Apple’s trusted numbers page is the place to start.