Dual-Camera MeWe's can be created with iPhone XR or newer iPhones, and viewed on all platforms (iOS, Android, and desktop).
1. Tap 
to create a post
2. Tap the Camera icon 
3. Choose MeWe from the option bar
4. Tap the Record button to simultaneously record with your iPhone's front-facing ("Me") and back-facing ("We") cameras
5. Tap Done