CameraFi Live is a freemium Android app for streaming from your phone. It supports the RTMP protocol for streaming to Uscreen.
You'll find ads and watermarks in the app but if you upgrade to a paid subscription version that is all removed.
Warning: While we've tested CameraFi Live ourselves, there can definitely be issues that will crop up depending on their app updates or your make of phone. We can't guarantee this app is going to work smoothly for everyone.
First install the app:
Now once launched you'll see this screen:
Select RTMP and on the following screen you'll see:
The RTMP URL and Stream Key are found in Uscreen and to make it easy on yourself, copy paste them and email them to yourself so you can copy easily from your email on your phone.