When viewing plotly graphs on mobile devices, it appears that the tooltip behavior is as such:
- show the hover tooltip(s) when you tap on the graph traces and the tooltip persists
- if you tap on the graph, on a place where there is not data, then the tooltip disappears.
However, in some graphs where the entire graph has data on it (i.e. normalized stacked bar graphs or area graphs) there is no easy way to click off the data to get the tooltip to disappear.