iD Mobile is a British mobile virtual network operator (MVNO) that uses the Three network in the UK for its services. This means iD Mobile relies on Three's infrastructure, including their 3G, 4G, and 5G signals, masts, and core network to provide calls, texts, and data to its customers. iD Mobile is owned by Currys plc (formerly Carphone Warehouse) and offers various plans including pay-monthly contracts and SIM-only deals. The coverage and network experience are essentially the same as Three’s, with no prioritization of Three users over iD Mobile users. iD Mobile also supports modern features like 5G, 4G calling (VoLTE), eSIM, and includes benefits like data rollover and extensive EU roaming capabilities. It operates primarily online and through stores like Currys and Carphone Warehouse.