T-Mobile is the first US carrier to successfully test carrier aggregation on the uplink side of a 5G data connection on a live 5G SA network. This new technology enabled upload data speeds of 207 Mbps, a record for sub-6 GHz (non-mmWave) 5G. Faster speeds are common in the dowlink (download) direction, but uplink speeds are typically slower. Faster uplink speeds enable higher-quality video conferencing, for example. The company expects to roll the feature out for regular customers early next year. The test used a smartphone with a Qualcomm Snapdragon modem and Nokia equipment on the network side. The two carriers that were aggregated were in bands 2 (1,900 MHz) and 41 (2,500 MHz). T-Mobile also provided an update on its 5G network coverage and plans. The company claims that its 5G network now covers "326 million people across 2 million square miles – more than AT&T and Verizon combined." That includes slower low-band 5G. As for the faster mid-band 5G that T-Mobile brands "Ultra Capacity 5G", the company says that it currently covers 275 million people nationwide, and plans to reach 300 million people – "nearly everyone in the country" – by the end of this year.


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