Helium is a pioneering decentralized wireless infrastructure network (DePIN) that incentivizes users to deploy hotspots providing wireless coverage, including LoRaWAN IoT connectivity and 5G cellular service. After migrating from its own L1 to Solana in April 2023, Helium has benefited from improved scalability, lower transaction costs, and deeper ecosystem integration. The project boasts one of the largest real-world decentralized networks, with hundreds of thousands of hotspots deployed globally, demonstrating genuine utility beyond speculation. Its partnership with major carriers like T-Mobile for the Helium Mobile offering adds significant credibility. However, Helium's classification as DeFi infrastructure is somewhat tangential"it's fundamentally a physical infrastructure protocol rather than a financial primitive, though its token economics and staking mechanisms do carry DeFi elements. Key risks include regulatory uncertainty around telecommunications, competition from traditional carriers, and the challenge of sustaining hotspot operator incentives as token emissions decrease. The migration to Solana was executed well, and HNT benefits from the chain's vibrant ecosystem. Helium remains a flagship DePIN project with real-world adoption, though investors should monitor network utilization metrics closely.