Drop down lists on iphones don't work

[vernjr]

I've created a document in Adobe Acrobat Pro called a "Float Plan" (on Float Plan Central) that contains several drop-down selection lists, check boxes and text entry fields.  I've chosen the feature when saving the Float Plan to enable the ability to enter and save data entered into the form when using Adobe Reader.  On a PC, when the form is downloaded all of the fields work perfectly in Adobe Reader.  However on an iPhone, Adobe Reader does not allow you to enter anything, only view an empty form.  So, installed Adobe Fill & Sign hoping this would allow an iPhone user to enter data.  Adobe Fill & Sign does allow you to enter text in text fields and use check boxes, but the drop down lists won't display.

Questions:

Why does Adobe Reader iPhone not function identically to Adobe Reader on the PC?" 

Is there an option Adobe Acrobat Pro to enable drop down lists to display (drop down) and work on an iPhone?

On an Android phone, using Adobe Reader or Adobe Fill & Sign, you can't enter anything in the downloaded PDF form.  Why?

Look forward to your insight.

[MobileDeveloperCK]

Hi vernjr​,

Acrobat Reader mobile apps (for iOS and Android) support Acrobat forms (including drop-down lists) with some limitations.

In order to properly diagnose the cause of your specific problem, we would like to examine your PDF form.

Would you be willing to share your PDF form with us (Adobe)?

I sent you a forum private message with the instructions on how to share your document with us.

Thank you for your help.

[Tori921]

Can I please get assistance.  I am having issues with a PDF file where drop down list are not functioning on Iphone or Ipad.

[MeenakshiNegi]

Duplicate post

Please refer this thread Drop Down List not working Ipad/Iphones for PDF file for further discussion on this issue.