The new iPad brings with it the option for a new, dual radio that brings with it 72Mbps LTE on AT&T and Verizon in the US and Rogers, Telus, and Bell in Canada. Sadly, there's no international LTE support for Australia, Asia, or Europe yet, perhaps due to the differences in LTE segments around the world. However, the new iPad also brings a new 42Mbps HSPA+ radio for AT&T, Canadian, and international carriers that support it. (Technically dual 21Mbps HSPA+ radios.) Those are theoretical speeds though -- what you get in a lab when alone, sitting on top of a tower. In the real world we're often lucky to see half the theoretical speeds, and often considerably less. That's why we put them to the test.