What is the UI when the sign-in mode for Teams Phonedevice is CommonAreaPhoneSignIn?

Question

What is the UI when the sign-in mode for Teams Phonedevice is CommonAreaPhoneSignIn?

Suzuki, Kohei/鈴木康平 0

Hello

The contact information display of the phone set to CommonAreaPhoneSignIn has changed since the other day.
Specifically, the display name has been changed to the company name.
This problem is very serious.
Is this a specification change? Is it a bug?

I want you to tell me.

0 comments

1 answer

Your answer

Answer 1

Hi @Suzuki, Kohei/鈴木康平,

Thank you for posting your question in Microsoft Q&A Forum.

Based on my understanding, when a device is signed in using CommonAreaPhoneSignIn, it typically uses a resource account with a Teams Shared Device license. The display name shown on the device is derived from the resource account’s display name, which is often set to the company name or location during setup.

First of all, please accept my apologies for any inconvenience this issue may have caused. Regarding your question about the display name change, I cannot immediately confirm whether this is a bug, a specification change, or something else because based on my current research, I have not found any official announcement about this change.

As for your question about the UI when the sign-in mode is CommonAreaPhoneSignIn, you can refer to this article for a detailed explanation of the sign-in process, which may address to your mention: How to sign into a Teams Phone – OIT Knowledge Base. Please feel free correct me if my understanding is incorrect, with your additional information, we can work together to find the suitable information.

Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link

Additionally, could you please share more details to help me better understand the situation?

Does the change you mentioned occur on a single device/user, or is it happening across multiple devices and users in your company? If it only affects specific devices or users, you may want to reach out to your IT administrator (who manages Teams Phone devices and user accounts) to double-check the username, display name, and device configuration. These settings can be reviewed in the Microsoft 365 Admin Center and Microsoft Teams Admin Center.

If you're end-user in your organization and unsure who the Global Admin is, you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support.

Could you also share screenshots of the change you’re seeing? Has this behavior occurred before, or is this the first time it has appeared?

Thank you for your time and cooperation, I'm looking forward to your response.

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Suzuki, Kohei/鈴木康平 0 Reputation points

2025-09-02T11:32:14.66+00:00

Thank you for Thank you for your answer. I'll answer your question.

・Is the event occurring on multiple devices?

→Yes.It's happening on multiple phones.your answer.
Suzuki, Kohei/鈴木康平 0 Reputation points

2025-09-03T01:48:42.5233333+00:00

Thank you for your answer.

I'll answer your question.

・Is the event occurring on multiple devices?

→Yes.It's happening on multiple phones.
Anonymous

2025-09-03T16:11:11.17+00:00

Hi @Suzuki, Kohei/鈴木康平,

In my previous reply, I had asked if you could share a screenshot showing the change you mentioned. To better address your issue, could you please share the image or screenshot again via the private message I’ve already sent you?You can access the private message by clicking the “View message” button as shown below.

And in the meantime, I understand that you're referring to the inbound caller ID behavior, where the display has changed from showing a number or username to showing the company name when a user makes a call.

If my understanding is correct, I recommend contacting your Global Microsoft 365 administrator to check whether any changes have been made in your tenant settings.

You can also refer to this discussion for more details: Can Microsoft Teams Voice do Branded Calling?

Additionally, could you kindly ask your IT admin to confirm whether they have previously set up CommonAreaPhoneSignIn by using this article: Set up common area phones for Microsoft Teams. If possible, please ask them to share the steps they followed. It’s possible they used PowerShell to configure or update the sign-in mode in your tenant, which may have caused the change.

Thank you for your time and cooperation, I'm looking forward to your response.
Anonymous

2025-09-08T09:06:26.7966667+00:00

Good day @Suzuki, Kohei/鈴木康平, Do you have any new updates? I truly want to ensure your experience is as smooth as possible.

While waiting for your response, I will also be monitoring other customer questions on the forum to assist them. If you have any further questions or updates, please tag (@Mia - Tr) in the reply so I can assist you more promptly and thoroughly.

Thank you for your valuable time.