src/Covi.iOS/Linker.xml

<linker>
  <assembly fullname="Prism.Forms">
    <type fullname="*" />
  </assembly>
 <assembly fullname="Prism.Forms.Extended">
    <type fullname="*" />
  </assembly>
  <assembly fullname="Prism.Container.Extensions">
    <type fullname="*" />
  </assembly>    
   <assembly fullname="DryIoc">
    <type fullname="*" />
  </assembly>
  <assembly fullname="System.Reflection.Emit.Lightweight">
    <type fullname="*" />
  </assembly>
  <assembly fullname="System.Reflection.Emit.ILGeneration">
    <type fullname="*" />
  </assembly>  
  <assembly fullname="Prism.DryIoc.Extensions">
    <type fullname="*" />
  </assembly>
  <assembly fullname="ReactiveUI.XamForms">
    <type fullname="*" />
  </assembly>
  <assembly fullname="LiteDB">
    <type fullname="*" />
  </assembly>
</linker>