Mobile devices don’t support the traditional mouseover function. However, in most cases, tapping on an element—such as a chart segment or a ZIP code on a heat map—will display the tooltip, similar to how mouseover works on a desktop.
That said, if the element also has an associated click action, tapping it will trigger the click function instead, preventing the tooltip from appearing as it would on hover.”
How can I replicate mouseover functionality on a mobile device?