Hi I use Xibo android client.I created a 1920x1080 template.But there are black spaces in the top and bottom of the player.
Have u set the screen orientation correct on both on your Android device and the display profile on the CMS
Take a picture of your screen and share
on the xibo andriod client go to the right upper corner, and click status, look for screen size.
Your screenshot is from Settings
You should click Status, you will see
CMS URL
Display name
Licens
.
.
Screen Size
Your layout region have to be 1920x1080 and same with the image size.