This "pure" Android phone designed to Google's specs is based on the LG G2 and has many improvements over the Nexus 4, including 5" full HD display, 4G LTE, and a Snapdragon 800 processor.
This more-affordable cousin of the K30 is based on LG's K10 (2018) for other markets. This Android phone has an 8-megapixel main camera, memory card slot, and 3.5mm audio jack.