On Thursday, T-Mobile announced an important milestone in its 5G rollout. In its Belleview, Washington laboratory, the carrier, Qualcomm, and Ericsson announced that it achieved the first 5G data phone call. This was achieved using the Qualcomm X55 5G modem in conjunction with Ericsson's 5G radio systems using T-Mobile's 600MHz band (Band 71). The test is significant because it was tested using a commercial modem. The Qualcomm X55 modem is a second-generation 5G modem that will eventually be built into off-the-shelf smartphones. Currently, T-Mobile's "Extended Range LTE" is...
Source: https://www.gsmarena.com/tmobile_conducts_first_5g_call_over_low_band_600mhz_spectrum_using_qualcomm_x55_modem-news-38089.php
