How to Complete ChatGPT/OpenAI Phone Verification

ChatGPT asks for a phone number during signup — and OpenAI is choosy about which numbers it accepts. If your number keeps getting rejected, you're in a region OpenAI doesn't fully support, or you simply don't want your personal line attached to an AI account, here's the working path.

Why OpenAI verification fails for many people

VoIP numbers are refused outright — OpenAI checks number ranges before sending.
Region restrictions — OpenAI doesn't support every country; numbers from unsupported regions get refused.
Recycled public numbers — the free SMS sites' numbers are burned through thousands of attempts and mostly dead for OpenAI.

A SIM-backed temporary number from a supported country is the fix — real carrier delivery, fresh enough to pass.

Step by step

Top up on Micro OTP — from $1, by card, Mobile Money, or crypto.
Pick "OpenAI" or "ChatGPT" in the service grid.
Choose the number's country carefully — pick a country where OpenAI operates (US, UK, and most of Europe are reliable; "Best available" also works since it tracks delivery success).
Enter the number on the verification screen and request the code.
Copy it from your order page into the signup form.

OpenAI-specific advice

The number doesn't need to match your country. OpenAI cares that the number is in a supported region — not that it matches your IP or residence. A US number works from Nigeria, Cameroon, or anywhere else OpenAI serves.

Workspace/API accounts verify the same way. Whether it's a consumer ChatGPT account or an API platform account, the SMS check is identical.

If it's rejected, change country. OpenAI's filters shift; a refused number is a free cancel-and-retry. See the general troubleshooting guide if codes stall.

After you're in

The number expires within minutes — so:

Email is your anchor. Keep the account email verified and the password strong.
Enable 2FA (authenticator-based) in OpenAI settings if you want the extra layer.
If you later need to re-verify for API access tier changes, that's a fresh check — you can take another temporary number the same way.

Legal and practical standing

Verifying with a temporary number for a service that operates in your region is a privacy choice, not a violation. Using it to access a service in a region where it's explicitly unavailable is grayer — OpenAI's terms restrict some jurisdictions, so understand what you're doing. For ordinary users in supported regions, it's a non-issue.

Cost: typically under a dollar, shown before you pay — and the standing rule applies: no code, no charge.