How to get an authentication code faster

Authentication codes are automatically sent to your trusted devices via “data” NOT SMS.

That’s why you never received it.

To send the code via SMS (or Voice) to one of your pre-designated Trusted Numbers, you need to click “Didn’t Receive Code” and then select which Trusted Number to send to.

See more details in these articles:

Get a verification code and sign in with two-factor authentication - Apple Support

About trusted phone numbers and trusted devices for Apple Account - Apple Support

Based on: Get a verification code and sign in with two-factor authentication - Apple Support

A code is sent first to your trusted devices (some other Apple computer or Apple mobile device signed in with your account) automatically. If you have a trusted device running iOS 11 and later, OS X High Sierra and later, iPadOS 13 and later, or watchOS 6 and later, the verification code is displayed automatically on your trusted devices.

If you don’t have a trusted device handy, you can choose to have a verification code sent to your trusted phone number as a text message or phone call.

1. Select “Didn’t Get a Code?” or “Can’t get to your devices?” on the verification code screen.

2. Choose to have the code sent to your trusted phone number.

3. You'll get a text message or phone call from Apple with your verification code. This text message might include an additional domain validation line. This line includes the @ symbol, the website name, and your code (for example: @icloud.com #123456 %apple.com).

4. Enter the code on your other device to complete sign in.

It is a good idea to have more than one trusted number.

Welcome and thank you for reaching out. 🤗

According to Apple:

Not sure where your verification or reset email was sent? You can check all of the email addresses associated with your Apple Account or resend the email.

Search for the email:

The email is sent from “Apple”, so you can search for it in your email account. If it isn’t in your inbox, check your folders.

If a spam filter or email rule moved the email, it might be in the Spam, Junk, Trash, Deleted Items or Archive folder. You might also have to change your email address settings to allow messages from email.apple.com.

Make sure you’re checking the correct email account:

If you’re looking for a password reset email, check each email address associated with your Apple Account.

If you’re looking for a verification email, you can sign in to your Apple Account and review all the email addresses you have on file, including the one that you’re trying to verify.

If the email address is spelled incorrectly, you can update it and send another verification email.

Resend the email:

To resend a password reset email, repeat the steps to reset your password and a new email will be sent to your Apple Account primary email address.

To resend the verification email, sign in to the Apple Account on the web. Click Resend next to the email address that you want to verify and you’ll receive another email at that address.

Make sure that you’re getting email:

If you’re not getting any email, you might need to contact your email service provider for help. Learn what to do if you can’t send or receive email on your Mac or if iCloud mail isn’t working.

If you need more help, contact Apple Support directly.

Good Luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer

It sounds like you’re perhaps trying to send an SMS to a phone which is not yet fully activated ???

It’s not clear from your posts how many devices are involved, their respective activation / Apple Account sign-in statuses, and to which device you’re attempting to send a verification code via SMS.

Perhaps a clear restatement might help all of us help you.