On Android phone, you can switch between the cameras on the main camera screen when taking a photo or recording a video. In the bottom part, there are usually a multiple images of trees. Each of them represents a different camera or camera mode:
In this case:
- Trees on the left represent an ultrawide camera
- Trees in the middle represent a main camera
- Tree on the right represents a telephoto camera allowing to use digital or optical zoom
To switch a camera or camera mode, you have to tap on preferred tree image.