In the Pokémon universe, a Pokédex is a portable device trainers carry around that provides a database of all known Pokémon, so making a phone case look like one makes a lot of sense.
Pokemon releases new Nanoblock models, including Pawmi, Tandemaus, & Clodsire from the Paldea region. Nanoblocks are micro-sized building blocks similar to LEGO, and popular collector items for fans.