Is the network down?Check Onomondo Status Page to see current network status.
SIM is offline and Network Logs / Signaling Logs are emptyMake sure that device settings are correct, FPLMN is clear, and test connectivity with AT commands.
I deactivated my SIM and activated it again, but it is not workingCheck and clear the FPLMN list on the SIM.
When a SIM suddenly drops offline, what can we do besides restarting the device?Having Fallback strategies ensures higher uptime
Why is my device connecting to 4G and GSM simultaneously?Your device is connecting to two different sides of the network for different purposes.
Unusual blocking of LTE-M and NB-IoT by certain carriersA couple of networks are closing LTE-M connections after they are created as a way to reject LTE-M.
My device cannot connect and I see returnError: "OperatorDeterminedBarring" in Signaling LogsReview the FPLMN list and perform a full scan to ensure optimal connectivity.
The device has attached data connection, but I am not receiving any dataReview device configuration.
I have inserted the SIM into my device, but it fails to establish a data connectionMake sure that APN, data roaming, and network registration settings are correct.
My device cannot connect to the network after crossing country borders.Ensure optimal device configuration for the current country.
My LTE-M / NB-IoT device is attempting to come online, but I do not see any Network Logs.Check if LTE-M / NB-IoT is available in your country and adjust device settings if needed.
SIM with connector is online, but I cannot receive data.Check for server misconfigurations or missing connector passthrough settings.
My device cannot connect on LTE-M / NB-IoT and there are no Network LogsCheck your device configuration and timeout settings for optimal connectivity
How do I get my device to register on GSM?Check GSM registration status on the device with AT+CREG? command.
What happens if a device attaches and detaches again and again?Loops of "attached data connection" and "detached data connection" indicate normal and expected behavior.
I see 0 byte sessions when using NB-IoTWhen the device is attached to NB-IoT there is no data in the data sessions on the platform make sure to check that ePCO is disabled.
How many bearers can my modem open simutaneously on Onomondo's network?Onomondo only allows one concurrent bearer open at a time. Make sure that the modem does not try to open multiple bearers
I cannot establish an FTP connection from my deviceMake sure FTP servers are set up in "Passive" mode for the device to establish a connection
I see unusual spikes / drops in data usage on a SIM.This is often related to communication happening in the packet layer between device and server. Use Traffic Monitor to investigate further.
My device cannot send data when attached to Vodafone Spain LTE networkIt's a known issue related to extra header information added by the local serving gateway, specific to Vodafone Spain.