With Teams Walkie Talkie feature you can turn your mobile phone into Walkie Talkie. You speak directly to the mobile device and others can hear you. Below are more details.
How to enable it
To use Teams Walkie Talkie, you need to have a Teams Setup Policy that includes Walkie Talkie as an app. Then you need to assign this policy to the users. This will be explained in more detail in this article.
How to use it
In a traditional phone call, you choose whom you want to call, and dial that person. They can accept the call or reject it call. But for Teams Walkie Talkie, you need first to be on a channel (by joining it), and when you want to talk you press a button and keep talking while the button is pressed, everyone on the same channel is going to hear you. This is like a real Walkie Talkie.
It required a Teams client running on a mobile phone. It needs internet of course. And it will work even if the phone is locked
Part 1: Modifying the Global Setup Policy to Make Walkie Talkie App Available
To enable Walkie Talkie, the users should be assigned a Setup Policy that has the Walkie Talkie app enabled. You can use a custom policy and assign it to a set of users, or you can simply modify a setup policy that is already assigned to the users.
In the below steps, I am modifying the Global Setup Policy that is already assigned by default to all users:
Go to Teams Admin Center > Teams apps > Setup policies and click on the “Global (Org-wide default)” policy
Make user that the “User pinning” option is on
Scroll down to “Pinned apps”
Click on “Add apps”
Search and add the Walkie Talkie app
Click on Add
The app will be added to the list of apps in the policy
To make Walkie Talkie app as the first tab on Teams client, rag the name of the app
Drag it until it reaches the top of the list of the apps
Release it and it will be on the top of the list
Click on “Save” to save the policy
Part 2: Accessing Walkie Talkie and Connecting to A Channel
When you open the Teams App on the mobile, you will notice the Walkie Talkie tab at the bottom of the screen, for my configuration, I made the tab to be the first by making the Walkie Talkie application the first when configuring the policy.
Accessing Walkie Talkie Tab
The following image shows the Tab the option to view the tab
After clicking on Walkie Talkie Tab, you will be taken to Walkie Talkie tab
Selecting a Channel
When you are connected to the channel, you will be able to hear the messages that are broadcasted to this channel, and you will be allowed to broadcast voice messages to that channel
Walkie Talkie tab, click on “Channel” to select the Team and the Channel in that Team where you want your Walkie Talkie to connect to
In my case, I am selecting the General Channel of Team1 as the image below shows
The Walkie Talkie tab/page will show you the selected channel
Connecting to A Channel
Click on the connect button to get connected to the selected channel.
The following shows the app is connecting to that specific channel
Viewing The Other Connected Users to Your Channel
The following image shows that there are two users connected to Walkie Talkie on the same channel
Click on 
to view the connected users to that channel
The following image shows the connected users
Part 3: Sending a Voice Message
When you click on the microphone button in the middle of the Walkie Talkie tab, you will be “live”, and you can send a voice message to all the users connected to the channel you are connected to. When you are on live, will see the word “Live”. You need to keep the pressing microphone button as long as you are sending the voice message.
