With BIGVU you can film any way you like, whether it's vertical or horizontal.
1. Decide if you want your video displayed landscape or portrait. This is how your teleprompter will scroll
Make sure ROTATION is enabled on the setting of your phone. Check these articles for more info Instructions for Apple or Instructions for Android
2. Press the camera icon to open the teleprompter
3. Make sure that the positioning is good
4. Set up your teleprompter
5. Hit record