Can I control the button appearance for devices in Claro (DK one)

We do have some functionality built-in that might address what you need to do. Basically, if you have narration audio set to autoplay, then if for some reason it can't autoplay we show a built-in button that gives the learner the ability to start the audio. We did this in response to the way that most browsers have moved to not allowing autoplay of media like audio and video, especially on mobile devices.

Here's a link to the article with more information on that built-in feature. 

You can also set the device type as a trigger for most actions. 

So you could set up a button on the page to play the audio file when clicked (I won't list those steps here), but only show that button if the learner is on a mobile device.

1. Select the Interact tab
2. Select Triggers
3. Select Current Page >> is Loaded
4. On the panel that opens, select Show
5. Select Next
6. On the panel that opens to the right of the stage, select the button, then on the Triggers: drop down list, select When Viewed On...
7. Now, you'll see a list of device options. If you only want the audio to autoplay on mobile devices, just select the Smartphone and Tablet checkboxes.
8. Select Apply.   

Hope this helps!

Thank You Very much Chris for you response, 

When I do this, I am facing few more issues:

a. 1st page audio and content loads fine when I move to next page the current page audio plays double (in Edge) 

b. audio and content does not load initially but when I use play button from player on top only audio plays but content does not load (IE 11, Chrome, and iOS)

c. When i come back to Previous page audio plays double.