Apr 17, 2017 08:53 AM|Zhi Lv - MSFT|LINK
As far as we known, the title information is most often shown as a tooltip text when
the mouse moves over the element. So, when open it in mobile, it will not trigger the mouse move event, and the title will not display.
I suggest you try to attach a click event to the element, then display the title when click the elements:
You could refer to this thread:
Show span title on click like on mouseover