OpenAI's SMS never arrives in unsupported countries — and VoIP numbers get rejected outright. Verify ChatGPT and the OpenAI API with a real mobile number from a supported country instead.
OpenAI supports far fewer countries for SMS than for service access. If the code never comes, the account never opens — unless the number is from somewhere it does.
Pick a number from a country OpenAI texts reliably — UK and EU ranges work well — and the verification code arrives in your dashboard in seconds.
platform.openai.com runs the same phone check. One verification and your API keys, billing and usage dashboards all work normally — wherever you build from.
Your conversations with an AI are personal enough — the account doesn't need your lifelong phone number attached to it as well.
Buy a temporary number from an OpenAI-supported country in your dashboard.
Type the number into the verification screen during ChatGPT or API signup.
The SMS appears in your dashboard within seconds. Enter it and start prompting.
💡 One account, verified properly. OpenAI limits how many accounts a single number can verify and detects mass registration — farming free credits gets accounts banned. Use a virtual number to verify your account when your country isn't supported or you value your privacy; the good news is OpenAI rarely re-verifies, so even the $0.50 temporary number usually does the job.
Two common reasons: your number is VoIP (OpenAI blocks VoIP ranges), or your country isn't on OpenAI's supported list, so the SMS never arrives. A real mobile number from a supported country - which is what eSIMfly provides - solves both.
Yes. Buy a temporary number from a supported country in your eSIMfly dashboard, enter it in OpenAI's verification screen, and the code appears in your dashboard within seconds. Your personal number never touches the account.
Yes. API accounts go through the same phone verification as ChatGPT. Developers in unsupported countries routinely verify with a number from a supported one - the account works normally afterward.
UK and most EU numbers work reliably. In your eSIMfly dashboard, pick a country marked as available for OpenAI - if a code doesn't arrive, you can try another number without extra cost for failed receptions.
OpenAI limits how many accounts one number can verify and actively detects mass registration. Our numbers are for legitimately verifying your own account - for example when your country isn't supported or you don't want your personal number on file - not for farming free credits, which violates OpenAI's terms.
Rarely - OpenAI mostly verifies once at signup, and login afterward uses email/password or SSO plus optional app-based 2FA. That makes ChatGPT one of the few services where a $0.50 temporary number is genuinely enough. If you want the same number available for future re-verification, choose the permanent option.
Verifying other services? See Google & Gmail, Telegram, LinkedIn or general SMS verification numbers — or compare all options on the virtual number page.
