ChatGPT Phone Verification: How It Works

ChatGPT asks for a phone number to confirm you are a real person and to protect your account. A real mobile number works best; many internet (VoIP) numbers are refused. Here is how it works and what to do when the code does not come.

When ChatGPT asks for your number

OpenAI may ask you to verify a phone number when you sign up for ChatGPT or the API, and limits how many accounts one number can verify. AI services check phone numbers to limit free accounts and abuse.

Which numbers work

• Your own mobile number works, as long as it can receive texts from short codes.
• Non-VoIP numbers from a mobile carrier are treated like any other phone.
• VoIP numbers from calling apps are often refused, or the code never arrives.
• A number already used on another ChatGPT account is usually refused.

Step by step

1. Open the phone step in ChatGPT and choose the country from the list.
2. Type the number without a leading 0 or a repeated country code.
3. Ask for the code once and wait a minute.
4. If the app offers a call or email instead, use it when texts do not arrive.
5. Enter the newest code only.

Using a virtual number for ChatGPT

A second number that you control can receive ChatGPT's code if it is a real mobile line. Avoid free public numbers: everyone can read them, and ChatGPT has usually seen them before.

If the code does not come

• Check spam and "unknown senders" in your messages app.
• Pause text-blocker apps and Do Not Disturb.
• After "too many attempts", wait a few hours before trying again.
• Try another number type if the app refuses yours.

FAQ

Why does ChatGPT need my phone number?

AI services check phone numbers to limit free accounts and abuse.

Does ChatGPT accept virtual numbers?

Non-VoIP mobile numbers usually work; numbers from internet calling apps are often refused.

Can I use one number on two ChatGPT accounts?

Usually not: most apps allow a number on one account at a time.

What if ChatGPT says too many attempts?

Wait a few hours, then request one code.

Will ChatGPT ask for the code again later?

Often, when you sign in on a new device or change account details. Keep the number, or add email and an authenticator app.

Should I use a free public number?

Only for a quick test. Anyone can read the code, and popular apps usually refuse those numbers.

Related: ChatGPT account recovery · ChatGPT two-factor codes · ChatGPT code not received · how to sign up for chatgpt without your phone number · verification code not received on any app.