mount | grep -iE "modem|fsg"

root@falcon_umtsds:/ # mount | grep -iE "modem|fsg"
/dev/block/platform/msm_sdcc.1/by-name/fsg /fsg ext4 ro,context=u:object_r:firmware_file:s0,nosuid,nodev,relatime,nobarrier 0 0
/dev/block/platform/msm_sdcc.1/by-name/modem /firmware ext4 ro,context=u:object_r:firmware_file:s0,nosuid,nodev,relatime,nobarrier,data=ordered 0 0