Our 5G modem only can work in sub-6 GHz, we can not use the n257 band.
For your information, can work in all these frequencies:
5G NR Sub 6 GHz supported bands:
n1/n2/n3/n5/n7/n8/n20/n28/n41/n66/ n71/n77/n78/n79
LTE CAT20 supported bands:
B1/B2/B3/B4(66)/B5(18/19/26)/B7/B8/B12(17)/B13/B14/B20/B25/B26/B28/B29/B30/B32/B38/B39/B40/B41/B42/ B43/B46/B48/B71
WCDMA supported bands:
B1/B2/B3/B4/B5/B8/B9/B19
