Trying to Link to an Attached PDF on an iphone using Adobe acrobat reader

Good evening I'm trying to have one document which will have multiple referral documents attached as pdfs in the main document, so when you click on the appropriate referral it will open up the attached PDF that you can then fill out and submit.....

I have used

Which works fine on the desktop, but does not work on the iPhone using adobe acrobat reader, it has the attachments on the file but the link does not work...any hints

many thanks in advance

Richard  .