@dieharddan / @fredldotme looks like I may have found something interesting, I think short enough to drop here:
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_list() 6 cell(s):
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_cell_lte() [lte] reg=1,mcc=311,mnc=480,ci=78151704,pci=166,tac=1280,strength=18,rsrp=107,rsrq=11
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_cell_lte() [lte] reg=0,pci=172,strength=12,rsrp=107,rsrq=10
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_cell_lte() [lte] reg=0,pci=166,strength=13,rsrp=107,rsrq=11
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_cell_lte() [lte] reg=0,pci=172,strength=13,rsrp=111,rsrq=16
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_cell_lte() [lte] reg=0,pci=167,strength=13,rsrp=114,rsrq=15
ofonod[2048]: drivers/ril/ril_cell_info.c:ril_cell_info_parse_cell_lte() [lte] reg=0,pci=200,strength=13,rsrp=116,rsrq=19
ofonod[2048]: plugins/sailfish_manager/sailfish_cell_info_dbus.c:sailfish_cell_info_dbus_cells_changed_cb()
2020-11-19 20:55:18 slot1< [00000146] RESPONSE_ACK
2020-11-19 20:55:18 slot1< 0000: 20 03 00 00 46 01 00 00 ...F...
2020-11-19 20:55:22 [gbinder-radio] WARNING: /dev/hwbinder:slot1 died
2020-11-19 20:55:22 [grilio-binder] ERROR: slot1 radio died
It looks like right after ACK, the radio hardware binder up and fails. Possibly related to the issue? Maybe driver failure?