Prevent of opening smartphone keyboard with textentry in slide storyline

Hello Mah Bag, 

Happy to chime in!

There isn't a way to prevent the smartphone keyboard from automatically displaying on screen when the focus is shifted to the text entry input box. I believe the smartphone keyboard is automatically called whenever there is a need to accept user text input, and clicking or tapping on a text entry input box on your phone is one such event. 

There might be a way to do this using third-party solutions, so I'll defer to the community on a possible solution for this one.