Tele2 is building one of the world's first nationwide 4G networks in Sweden. The network will cover 99% of the Swedish population and provide mobile broadband speeds up to 10-15 times faster than current 3G networks. Tele2 has partnered with Telenor in a joint venture called Net4Mobility to build and operate the shared 4G network infrastructure, which will allow for lower costs and faster rollout across the country. Tele2 has already installed the 4G core network and begun swapping existing 2G sites to 4G in Stockholm and Gothenburg, with coverage expected to expand to Malmo and Lund by the end of 2010.