Cellular carrier Vodafone on Thursday said that it has successfully run a field test of HSPA+ on its network to pave the way for deploying the 3.5G service. A trial conducted in Spain has managed 16Mbps downstream speeds in peak but real-world conditions, or more than double the theoretical-only 7.2Mbps peak for regular HSPA. The test comes despite using a single-antenna reception setup that lim