Can the Forms be used on a mobile device?

Short - Yes, they can.

If you want to see the entire process how that is done, I must warn you that there are very few steps involved, so if you are searching for a challenge, this would not be it :)

To see how to do this you can check out this guide: How to make forms Mobile Responsive

Do let us know however if you need some assistance to just make it perfect and we would be happy to assist.