DepinSim ($ESIM) is a decentralized connectivity protocol that enables global mobile internet access through crypto-enabled eSIMs. The protocol integrates telecommunications infrastructure with blockchain-based identity, stablecoin payments, and on-chain settlement, allowing users to access roaming data services across more than 190 countries without traditional telecom contracts. By tokenizing mobile data as a real-world asset (RWA), DepinSim links real connectivity usage with programmable, on-chain economic activity. The protocol supports consumer and enterprise use cases, including travel connectivity, Web3 applications, and data-driven services, with a live product, recurring revenue, and multi-chain deployment.