Can I use one phone number on 2 Apple ID?

Hello kittisak97,

Welcome to Apple Support Communities!

You can use one phone number per Apple ID. In some countries or regions, you can use your phone number as your Apple ID. Are you looking to use your phone number as an Apple ID?

If so, the steps here can help:

Here's how it works

Any time you set up an iPhone, iPad, or iPod touch, you have the option to sign in with your existing Apple ID or create a new account. If you create a new Apple ID on an iPhone in iOS 11 or later, you can use your mobile phone number as your user name in China mainland and India. If you live in China mainland, use your (+86) mobile phone number. If you live in India, use your (+91) number. Depending on your carrier, you might also be able to create a new account with a phone number on some Android devices, smart TVs, and streaming devices. Just choose Create Your Apple ID from the Apple ID sign in screen and follow the instructions to create your new account.

Once your account is created, you can use it to sign in to any Apple device or service. Whenever you sign in to a new device, app, or service, you’ll enter your mobile phone number—including the country code—and your password. Be sure to use the same Apple ID everywhere you sign in so that your Apple devices and services work together seamlessly.

This information is provided in Use your mobile phone number as your Apple ID - Apple Support.

When you set up two-factor authentication with your Apple ID, a trusted phone number must be used so you can receive the verification code.

Additional information can be found here:

Trusted phone numbers

A trusted phone number is a number that can be used to receive verification codes by text message or automated phone call. You must verify at least one trusted phone number to enroll in two-factor authentication.

You should also consider verifying an additional phone number you can access, such as a home phone, or a number used by a family member or close friend. You can use this number if you temporarily can't access your primary number or your own devices.

This information is provided in Two-factor authentication for Apple ID - Apple Support.

Cheers.