All the major US carriers are locked in competition over mobile data coverage and speeds, and each is working hard to come out on top. No matter which carrier you’re currently subscribed to, though, your 4G LTE downloads speeds will also depend largely on which city you’re in. Wireless research company OpenSignal has conducted a test of 35 major cities between July and September this year to get an idea of which has the highest average download speeds. Of course, in the context of all US cities, this is a fairly small sample, but it nonetheless gives an impression of how various regions are performing. The overall winner went to Minneapolis which achieved average download speeds of 21.5 Mbps — beating OpenSignal’s national average estimate which stands at 13.98 Mbps. The Midwest did well in general, according to the research, with Detroit coming in second, Chicago fourth and St Louis fifth; check out the full list below. What else is interesting about ...