Hold your device upwards to see the mountain(s) through the camera.
When you see the mountain through your phone, depending on the phone built-in compass and gyroscope, you might sometimes need to adjust the label positions by dragging 3D-panorama to match the mountain profile in front of you till full alignment. That helps to correct compass reading. Tip: It is a very convenient way to do that also by adjusting the sun location.
* On some devices like old iPads, panorama might take about half a minute or even a minute to upload, you can see the progress in the status message.
Once the mountain profile is adjusted, you can choose which panorama mode you want to use tapping on the icon in the top right corner:
Choose between the 3D terrain panorama, an outline, or only labels with names & heights.
You can zoom in with the pinch zoom gesture (two fingers zoom like in the Photos app) or with the zoom button in the bottom left corner.
Tap the labels in order to see more information about peaks and other objects. Please refer to the “How to get more info about mountains” section for more details.