Not every carrier, however, is eager to send calls over 5G. According to Fierce Wireless, T-Mobile was leading the charge last year as part of its ambitions to be viewed as the leader in 5G. Verizon and AT&T, on the other hand, appear satisfied to continue using LTE for calls as they build their 5G networks. T-Mobile has a tendency of boasting about its 5G firsts, including the first voice call over a 5G standalone network with LTE as a fallback in 2020.
