Why can't IRS verify my identity using My T-Mobile phone

Same thing happening to me and i do not know what to communicate to support person besides IRS can't validate my identity on post-paid account, someone mentioned "indicator" what indicator was changed?

Same problem with text messages from IRS.  I called T-mobile #611.  Explained the issue.  He did something with my account.  Totally fixed!  Received the IRS text.  Thanks a bunch!!!! 

2018.08.18.  I had the same issue.  Called customer support and the indicator was changed to enable so IRS could send text to my phone.  That is it!  You need to call T-mobile customer service #611.

Finally I was able to speak to a support representative. He asked me to use Internet Explorer (which I was using already), clear Temporary Internet Files and Cookies and try again. On the next try, it still failed to verify. He asked me to press Continue button which I faithfully did. The next screen informed me that my identity is verified and allowed me to create a userID and password. I'm going to have to wait for the Activation Code to arrive in the mail.

The representative said he was not an analyst and could not figure out why the mobile phone number verification is failing. He said they have been aware of the problem. I'm not holding my breath for the feds to fix it.

I hope some of this will help others.

That happened to my husband and me. The problem was a protection the government put on our accounts when our info was stolen from the Top Security Clearance rosters of the Office of Personnel Management (Yea, government computer security 😠 ). There was nothing to do, but go to the SSA offices and have it handled officially. It seems ANY credit monitoring can reek havoc on this authentication tool. 😉

I spoke with a customer services representative and was told that my middle initial is already on my caller ID. I've verified that it shows as Last name, First Name, Middle Initial. On the other hand, IRS registration service does not ask for middle initial.

I have confirmed that my account is postpaid.

The IRS registration presentation is at this site. Step by step registration process is here. This is what it says about mobile phone number:

A readily available mobile device. For instant access, your name must be associated with a U.S-based mobile phone capable of receiving text messages.  If the mobile phone number cannot be linked to your name, you may opt for a mailed activation code during registration.

My purpose of registration was to be able to get my tax transcripts online as explained here.

This is where I start registering for my account. Everything goes fine until I enter my phone number so they can send me a text message with verification code.

The error message says:

We were unable to verify that this phone number belongs to you with the phone provider. Please double check that your phone number was typed correctly or try a different number.  

IRS support number for e-Services registration is (866)255-0654, 1,2,1 with estimated wait time of 30-60 minutes. I'm currently on hold. As our illustrious President says, "Very Frustrating!".

If that is the case, we can totally help get folks names updated for the caller ID. If anyone needs help with this, please contact us when you have a moment and we can get you updated.

Same thing just occurred to me. I've been with T-Mobile for 10+ years with same exact number and IRS website cannot "verify my identity" with the number provided. What a joke.

Hey, @rmk9785e​!

Chris brought up a great question - how are they attempting to verify you? That might help us get to the bottom of what's going on.