Phunware uses Neo4j as the engine to power a knowledge graph that connects over a billion nodes, allowing them to deliver great mobile experiences and reach users with relevant content at scale. Their dataset is huge, with over 1.5 billion nodes and 17 billion relationships, and performance was critical for them, with query times in milliseconds or seconds. Neo4j has enabled Phunware to uncover data quality issues and improve their data quality, as well as bring together data from hours or days into seconds. The company's Phunware Knowledge Graph is a key part of this, allowing customers to build upon the dataset and extend it with domain knowledge, enabling them to deliver personalized experiences with mobile device profiles. Overall, Neo4j has been instrumental in helping Phunware achieve their goals, and they are excited about its potential for future growth and development.