Hi Wun thanks for posting in the Lucidchart Community! The Lucidchart iOS app does not currently support hotspot and link functionalities. Links and hotspots on existing documents will be visible in the iOS app but their redirect actions will be disabled. 

However we're always looking for ways to improve Lucidchart and your feedback is the best way for us to do that. Would you mind adding your idea to our feature request form? Ideas submitted to this form are passed on to the product development team for their consideration.

For more information regarding the capabilities of the Lucidchart Mobile App please take a look at the Lucidchart Mobile App Quickview article in our Help Center.

For more information on Links in Lucidchart please take a look at the Actions and Hotspots article in our Help Center.