我无法使用 Twilio 电话号码进行 Apple 双因素身份验证

Question

I am trying to use a Twilio phone number for Apple's two factor authentication, but when I set up the phone number on Apple's site the initial verification SMS is never received by the Twilio number. I have confirmed that Apple is able to send the text to a Google Voice number. I have also confirmed with Apple support that the message sent is a standard SMS. Is there something on Twilio's side preventing receiving the message?

Answer 1

This is actually by design. By default, Twilio long code numbers can't receive SMS messages from short code numbers. Look for the section titled "Are you expecting to receive SMS from a short code?"at the following link. https://support.twilio.com/hc/en-us/articles/223133447-Not-Receiving-Incoming-SMS-and-MMS-Messages-on-Twilio-Phone-Number

When I asked this question the functionality wasn't available at all, but now the feature can be requested. There are caveats. https://support.twilio.com/hc/en-us/articles/223181668-Can-Twilio-numbers-receive-SMS-from-a-short-code-

Answer 2

As a followup to ryechus' answer, I requested this functionality and was still not able to receive 2fa codes from apple in Twilio. Their support said:

the unfortunate limitation you're likely facing is that I have know Apple to prevent verification codes from being sent to virtual phone numbers.

Some services review the offered number and only send verification SMS to phone numbers associated with genuine handsets as a measure to protect against fraud.

Unfortunately, regardless of the Twilio configuration, in my experience Apple will not delivery verification messages to Twilio.

Interestingly, it does work with google voice.

Answer 3

I'm sorry to report/confirm you still cannot use a Twilio SMS number for 2FA messages from Apple. I can receive other 2FA SMS messages via short codes on my Twilio SMS number, but when I try to add the number to an Apple ID the verification message never shows up. Google voice still works.