What's the best iOS app for collaborating on team projects and attending virtual meetings from an iPhone?

Microsoft Teams is a versatile iOS app that serves as a mobile hub for team-based communication and project coordination. It is well-suited for professionals, educators, and students who need to participate in virtual meetings, manage group chats, and share documents while away from a computer. The app supports threaded conversations in channels, allowing users to organize discussions by topic or project, and integrates seamlessly with Microsoft 365 for real-time co-editing of Word, Excel, or PowerPoint files stored in OneDrive or SharePoint. For meetings, features like one-tap join, screen sharing, background blur, and live captions enable effective remote presentations and classes. Users report that the mobile interface mirrors key desktop functions, such as @mentions for alerts and in-chat polling, making it practical for on-the-go contributions. However, some reviews indicate that prolonged video calls can drain battery life on older iPhone models, and the navigation menu may feel dense on smaller screens. Despite these quirks, background sync for messages and calendar integration helps maintain workflow continuity. With support for multiple accounts and robust notification settings, it accommodates scenarios from corporate workflows to academic group studies, ensuring teams stay aligned regardless of location.