This is the desired behavior (also known as "responsive design"): A smartphone display is not broad enough to allow for the same display like a PC screen.
You can disable the dynamic display mode in the question, and use the same table-style-layout from the PC on the smartphone as well.
But, before you do that, make sure to change the question type from a scale with interim values (that you do not have) to a scale without them. You can still enable numbers an an anchor. And you will see that the other question type has a very different behavior on smartphones :)