Motorola has launched UK trials of the leading candidate for 4G mobile broadband technology, the long-term evolution (LTE) of 3G. The communications equipment maker began the trials at its testing facility in Swindon, UK on Monday. It plans to test out live LTE calls with data streaming, using a prototype LTE device and the 2.6GHz spectrum band that is due to be auctioned later this year. The news arrives after Motorola reported losses of $3.6 billion in the fourth quarter of 2008.