Searching for some advice on what to do next. I have an older Boron running 3.1.0 OS which has been in the field for almost a year continuously. About a week ago it started to miss posting data. Digging through the device vitals it appears it's connecting to two different towers. One with great connectivity and the other with very poor signal strength much further away. Now it seems to continuously be connected to the worst tower. As far as I can tell it's not related to battery status or memory usage.
What does a cloud device connection error of -220 mean? Can also post more of the device vitals if needed.
timestamp 2023-05-29T22:03:56.559Z 2023-05-29T09:31:57.105Z
device.network.cellular.radio_access_technology LTE LTE
device.network.cellular.operator T-Mobile T-Mobile
device.network.cellular.cell_global_identity.mobile_country_code 310 310
device.network.cellular.cell_global_identity.mobile_network_code 260 260
device.network.cellular.cell_global_identity.location_area_code 31716 31716
device.network.cellular.cell_global_identity.cell_id 19034114 18954499
device.network.signal.at LTE Cat-M1 LTE Cat-M1
device.network.signal.strength 45 81.66
device.network.signal.strength_units % %
device.network.signal.strengthv -97 -81
device.network.signal.strengthv_units dBm dBm
device.network.signal.strengthv_type RSRP RSRP
device.network.signal.quality 0 62.5
device.network.signal.qualityv -20 -9
device.network.signal.qualityv_units dB dB
device.network.signal.qualityv_type RSRQ RSRQ
device.network.connection.status connected connected
device.network.connection.error 0 0
device.network.connection.disconnects 2 1
device.network.connection.attempts 3 2
device.network.connection.disconnect_reason error error
device.cloud.connection.status connecting connected
device.cloud.connection.error 0 0
device.cloud.connection.attempts 7 2
device.cloud.connection.disconnects 7 4
device.cloud.connection.disconnect_reason error error
device.cloud.coap.transmit 1220 822
device.cloud.coap.retransmit 254 172
device.cloud.coap.unack 5 3
device.cloud.coap.round_trip 2768 1468
device.cloud.publish.rate_limited 0 0
device.power.battery.charge 92.5 72.54
device.power.battery.state charging discharging
device.power.source VIN battery
device.system.uptime 138776 93657
device.system.memory.used 69964 69644
device.system.memory.total 167644 167644
service.device.status ok ok
service.cloud.uptime 4 2
service.cloud.publish.sent 1 1
service.coap.round_trip 2017 466
device.network.signal.quality_units %
It'll be a few weeks before I can get out there and investigate further and/or use the Device Doctor for more detailed cellular debugging. Any tips on what I need to look for? Could this be something related to the tower(s) or with the Boron?
Appreciate the help.