What would be the best method to implement VoiceOver for TextBox on iOS?

[doum-vigeant-nventive]

I'm trying to improve the screen reader support for the UnoApplicationTemplate. The behavior for TextBox on iOS is not up to standards for accessibility.

Right now in the app template, when focusing a TextBox, VoiceOver reads it like so:

• If TextBox is empty:
  • PlaceholderText
• If TextBox is filled:
  • PlaceholderText

In comparison, when you use the form to create a new contact on the iOS built-in app Contacts, VoiceOver reads it that way:

• If TextBox is empty:
  • Label
  • PlaceholderText
• If TextBox is filled:
  • Label
  • Text input by user

What doesn't work is:

• Using AutomationProperties.Name in xaml
• Using AutomationProperties.HelpText in xaml

Do you have ideas on what would be the best way to support VoiceOver for TextBox?