If this is a Surface Duo or Surface Duo 2, enable automatic spanning for Teams under Settings → Surface Duo features → Span apps automatically, or manually drag Teams to the hinge between the screens.
Microsoft lists Teams as a dual-screen–enhanced app on Surface Duo. To use it across both displays:
- Open Settings on the Surface Duo.
- Select Surface Duo features.
- Select Span apps automatically and turn it on.
- Enable Microsoft Teams in the app list.
- Close and reopen Teams.
Alternatively, open Teams and drag its window to the center hinge to span it manually. This provides the existing two-screen Teams experience, but it does not guarantee that every Teams view will use both displays like Outlook’s inbox-and-message layout. Microsoft’s current documentation demonstrates Teams primarily as a call on one screen alongside another app, while still listing it as dual-screen enhanced.^1^
Request a Teams layout enhancement
If Teams already spans but does not make effective use of the full area, that is a feature request rather than a setting that can be enabled by a Teams administrator:
- In the Teams Android app, tap your profile picture.
- Open Settings → Help & feedback.
- Select Suggest a feature.
- Describe the desired behavior, including:
- Surface Duo or Duo 2 model
- Device orientation and folded posture
- The Teams screen affected, such as meetings, chat, calendar, or channels
- The preferred layout on each display
- Screenshots showing the unused or poorly arranged space
- Tap Send.^2^
There is no documented user or Teams admin control that changes Teams into an Outlook-style two-pane layout. Also, Teams Rooms’ dual display mode is for dedicated meeting-room hardware and does not apply to the Teams mobile app.
If “iPhone Duo” refers to a different foldable device rather than Microsoft Surface Duo, the exact device model and operating system are needed; the documented Surface Duo features → Span apps automatically setting applies specifically to Surface Duo devices.
References
- Different ways to use Surface Duo | Microsoft Support
- [Desktop](https://support.microsoft.com/teams/apps-service/give-feedback-in-microsoft-teams)