At the moment only the Kendo UI Grid with enabled mobile option will generate a header which can react to the touch and hold gesture.

This makes column resizing impossible when a web grid is used on mobile/tablet. Can you check internally if the grid is used on a mobile browser and create the mobile headers that work with the touch and hold gesture even when the grid does not have the mobile property enabled. This should work out of the box for all grids:

https://docs.telerik.com/kendo-ui/controls/data-management/grid/appearance/adaptive#resizing-of-columns