I am trying to sign up on retel while i am ale to sign up i am still blocked with the phone verification step specifically for my nigerian phone i am getting this error “We couldn’t send the SMS. Please try again later“

Based on community reports, other users from Nigeria have encountered the same “couldn’t send SMS” error during phone verification (1) . Here are two workarounds that have worked for others: Use a US number for signup - One user successfully registered using a US phone number, then switched to ema…

after activation, is it possible to change the phone number used for sign up?

Currently, Retell AI does not provide a self-service option to change the phone number associated with your login or two-factor authentication directly through the dashboard. (1) However, you can send an email to support@retellai.com to request a phone number change. (1)

ok, but apart from the signup, what is that phone number used for? I dont want to relate that number to the one I will use for calls or for the virtual agents

I don’t have specific information in the available sources about what phone number you’re referring to during signup or how it relates to the operational phone numbers used for calls. The sources do explain that when you purchase phone numbers through Retell AI, those numbers are used for making an…

I will use a US phone number just for account signup verification, but that US number will not be used for anything else. I will then change the account to be verified by email. And I would rather change the phone to one from my country. The problem is that I am not receiving the SMS right now.

Unable to verify phone numbers at SIGN UP for nigerian number error message "We couldn't send the SMS. Please try again later"

Support Help

Omar_Ashraf January 19, 2026, 11:56am 9

Hello @ripan
The phone number you used to sign up will not be used for anything other than the sign-up

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Unable to verify phone numbers at SIGN UP for nigerian number error message "We couldn't send the SMS. Please try again later"

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