Twilio test credentials don't work

Question

I'm trying to send a text message with Twilio like this:

@client.account.messages.create(
  from: '[phone]',
  to: '[phone]',
  body: 'Hey there!'
)

and I get the following error:

Twilio::REST::RequestError: The From phone number [phone] is not a valid, SMS-capable inbound phone number or short code for your account.

This is odd to me because according to the docs, [phone] is the one and only valid number when you're using your test credentials.

FWIW, my production creds work just fine.

Any ideas?

Answer 1

The number should be [phone] per the docs you cited. You've got 5006 as the last four digits instead of 0006.