Confirm context menu in iOS not working?

Has anyone used context menus in iOS? The code below for context menu on image works fine in Windows but not on iOS. I've tried many different touch settings unsuccessfully. I don't think that matters since it doesn't work with keyboard (and trackpad that has mouse buttons) either.

            <!--  Load image content  -->
            <Image Grid.Row="0" Source="mols.png"  >
                <FlyoutBase.ContextFlyout>
                    <MenuFlyout>
                        <MenuFlyoutItem Text="Load image"/>
                    </MenuFlyout>
                </FlyoutBase.ContextFlyout>
            </Image>

Can anyone confirm (or deny) this feature doesn't work in iOS?