Firebase 身份验证 - 无法添加电话号码进行测试

Question

I'm unable to add a phone number for testing my Firebase Phone Authentication workflow. See the images below:

Firebase Phone Auth Panel

After providing a valid phone number/verification code and clicking "Add", I get this error:

I've tried to register my device multiple times over the last two weeks with the same outcome. Hopefully someone has seen this before and if so, is there a solution?

UPDATE:

I've tried the following number formats with the same results -

+1 123-456-7890

+11234567890

Answer 1

Long story short, I was using my personal phone number as the number for test; which I successfully used on a previous Firebase-backed project with the same feature. I removed the test phone number from the Firebase project as I had finished testing the feature. I think it very well may be a bug on Firebase's end

I was successfully able to use the phone number "+1 111-111-1111"

UPDATE:

After successfully using the '+1 111-111-1111' phone number, deleting it, and trying to re-enter it, I was greeted with the same error

Answer 2

You need to delete the User phoneNumber in the authentication tab before you can add (or re-add) a phone number as a test phone number

Answer 3

1. First delete number for Authentication > User Tab.
2. Then add number now, it works perfectly.