Czech mobile operator T-Mobile CR has announced that it has boosted peak theoretical data speeds to 375Mbps/50Mbps (down/uplink) on its evolved LTE-A platform. The cellco is using tri-band carrier aggregation (3C) technology to achieve the ultra-fast data transmission speeds, amalgamating a 1×10MHz block of spectrum in the 800MHz band, with 20MHz blocks in each of the 1800MHz and 2100MHz bands. Initially only available in two locations – its Prague headquarters in Roztyly and in the municipality of Jíloviste (Prague-West District) – 3C LTE-A is supported by the Samsung Galaxy S6 Edge+ smartphone, with other devices expected to come on-stream in the coming weeks and months. Commenting on the launch, T-Mobile CTO Vladimir Klein said: ‘Expanding the coverage of our LTE networks, including improving its parameters, is our key priority and thanks to a combination of three bands we have moved one step further,’ adding, ‘I am very pleased that data traffic in our LTE network is soaring. In late-November 4G data throughput surpassed that on our 3G network for the first time.’ T-Mobile CR was the first Czech operator to launch LTE-A, and the first to combine two bands at the end of June 2014, when it introduced carrier aggregation in the area of Mlada Boleslav to increase maximum speeds to up to 225Mbps/50Mbps.