TeliaSonera, 
Telia’s 4G network is currently installed in the central parts of Stockholm and in parts of the Stockholm International, Kista and Hammarby Sjöstad. Telia plans to build out 4G in 25 locations in Sweden. During the third quarter of this year, the 4G network will be launched in Lund, Västerås, Malmö, Gothenburg, Uppsala and Linköping.
The carrier’s common 4G/LTE core network will be delivered exclusively by Ericsson and the radio networks by Ericsson and Nokia Siemens Networks.
http://www.teliasonera.se