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order menosan U.K. mobile operator EE is testing two times 20MHz to reach 300Mbps, which is the theoretical maximum, for now. Vodafone and Telefﾃδｳnica in Germany as well as SK Telecom in South Korea are testing one 10MHz channel plus one 20MHz channel for up to 225Mbps. The South Korean operator was the first to offer carrier aggregation in June, but only at speeds that can be matched by the fastest regular LTE networks.