The deal is supporting subscriber data management for all Telefónica UK's 3G, 4G, 5G networks, as well as IP Multimedia Subsystem (IMS), Voice over LTE (VoLTE), Voice over WiFi (VoWiFi) and Voice over 5G (Vo5G) services; along with the operator's IoT devices and nationwide Smart Metering. Deployment is expected in the fourth quarter and Nokia will oversee all professional services to complete the migration. Supporting the modernization of Telefónica UK's unified database deployment, Nokia will also deploy Shared Data Layer, a cloud-native database accessible via industry standard protocols to enable an open ecosystem and the integration of third party applications. Brendan O'Reilly, CTO, Telefónica UK, said : "Nokia's Subscriber Data Management software offers secure, robust connectivity capabilities, while simultaneously streamlining our network services.