Yes, as of early 2026, the Elizabeth line features full 4G and 5G mobile connectivity across all of its stations and throughout the entirety of its tunnelled sections. This project, delivered by Boldyn Networks in partnership with Transport for London (TfL), allows passengers to maintain high-speed data connections for streaming, social media, and calls while traveling deep underground between Paddington and Abbey Wood/Shenfield. This is a significant upgrade from the previous "connectivity gaps" that existed during the line's early years. All four major UK mobile operators—EE, Vodafone, Three, and Virgin Media O2—support this network. While other parts of the London Underground are still undergoing tunnel installations, the Elizabeth line serves as the flagship for a "fully connected" Tube network, ensuring that your digital life remains uninterrupted during your commute.