Faceted search is extremely helpful for certain kinds of finding—particularly for ecommerce apps. Unfortunately, the designers of mobile applications do not have established user interface paradigms they can follow or abundant screen real estate for presenting facets and filters in a separate area on the left or at the top of a screen. To implement faceted search on mobile devices, we need to get creative rather than following established Web design patterns. Explore the Four Corners, Modal Overlay, Watermark, and Refinement Options design patterns for mobile devices. Following these patterns can move us one step closer to making faceted search a usable reality on mobile devices.
But first, take a look at the challenges of designing mobile faceted search, which include navigational elements that use up precious screen real estate, limited search-refinement options, and the general lack of an iterative refinement flow.