As you may know, Microsoft Teams is set to replace Skype for Business as the core communication client in Office 365 in the near future. The Teams desktop app has already been updated with new calling features last month, and recent updates to the iOS and Android apps brought similar capabilites to the mobile clients.
Both mobile apps already supported HD audio and video calls with members of your team, but Microsoft Teams users can now call external numbers if they have an Enterprise Voice license as part of their Office 365 subscription. To proceed, users just have to tap Calls in the bottom bar and use the Dial pad to enter the phone number of your choice. It's possible to call personal phone contacts if you allow the app to access your address book.
The latest updates for Microsoft Teams on iOS and Android also brought two new features: The Assignments tab is now available for teachers and students in class teams, and users can now hide chat conversations by pressing (Android) or swiping on them (iOS). Let us know in the comments if these new additions will change how you use Microsoft Teams on your phone.