The 5G modem uses the Quectel RM520N-GL. A feature of this modem is that when 5G is not available, it will fall back to connect to 4G LTE.

Network Bands Are:

5G NR: n1/2/3/5/7/8/12/13/14/18/20/25/26/28/29/30/38/40/41/48/66/70/71/75/76/77/78/ 79/257/258/260/261
LTE-FDD: B1/2/3/4/5/7/8/12/13/14/17/18/19/20/25/26/28/29/30/32/66/71
LTE-TDD: B34/38/39/40/41/42/43/48
LAA: B46
WCDMA: B1/2/4/5/8/19