Allow your staff to communicate with your customers via SMS all inside of Microsoft Teams.
To send SMS to a new number, click on the New Message Icon from the Right corner on Chat. Now, type the number you want to send an SMS to or find any contact from your saved contacts by searching them (see image below).
Write your message in the text box at the bottom middle of your screen, then click on the fly/send button to send it to your contact.
After you send the SMS, the contact will be created in the Chat panel. Any new SMS will be added to the chat for that contact or phone number.