Step 1: Ensure the extension has a TMS account. (See how to set up a TMS Login Account.)
Step 2: Create an additional registration so that the desk phone and the softphone do not clash. (See how to set up additional registration here.)
Step 3: On your Cell Phone, go to the Google Play Store (IOS / Android) and download the Euphoria softphone and TMS.
Step 4: Open the Application and Log in to TMS with your account details and password.
Step 5: Choose the correct account. The phone will download the necessary files and prompt for permissions. Allow all permissions so that the application will run smoothly.