The specified combination of operating system iteration and application retrieval describes the action of acquiring content from a popular video-sharing platform onto a mobile device running a particular, older iteration of Google’s mobile operating system. For instance, a user might attempt to save a video for offline viewing on a device utilizing Lollipop, specifically version 5.1.1, via an application designed for that purpose.
This action was more prevalent when data plans were less ubiquitous and bandwidth was more limited. Saving videos allowed for consumption without incurring data charges or when connectivity was unreliable. Historically, it also represents a user desire for content control and preservation, predating the widespread adoption of streaming services that prioritize on-demand access over local storage.