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Troubleshooting guides and FAQs
Learn how to debug connectivity issues and manage your SIMs.
What IPs are the outgoing data from SIMs?The most up to date IP ranges for SIMs can be found on the Onomondo Documentation page.
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.
Network selection & network coverage
Control the networks your devices can connect to.
Can Onomondo offer reliable connectivity in country X?You can find information on all supported networks and technologies on our Coverage Page.
Do SIMs have any priority order of networks based on signal strength?No. The SIMs are non-steered and it's up to the device to choose the first network with strong enough signal.
How does the Network List function during connection sequence?Understand the role of Network Lists during the network selection process.
Does network X support NITZ (Network Identity and Time Zone)?Onomondo does not have information on which specific networks support NITZ.
Why can I not connect to NB-IoT and/or LTE-M network(s)?Check if the network operator supports NB-IoT and/or LTE-M connections.
Can I see which frequency band(s) my device connects through?No, this is not visible in Signaling Logs.
What coverage can I expect from my location?It depends on multiple factors
SIM management issues
Tags & Usage
Does the SIM card store the FLPMN list if the network has not been whitelisted?Networks excluded from the whitelist are added to FPLMN only when the module attempts to connect to them.
How can I disable the FPLMN function?FPLMN cannot be disabled. Consider upgrading your device firmware to avoid issues.
I cannot edit tagged SIM cardsYou have to enable "write access" on the Tag first. If this is disabled, Member level users will not be able to edit SIMs.
Is it possible to create eSIM for iPhone using the Onomondo platform?No, you cannot create SIM profiles on the Onomondo platform yourself.
What are "Active SIMs" on the dashboard?"Active SIMs" indicator refers to SIMs that have been activated last month.
How can I see the network signal strength for a SIM card?Onomondo has no information about signal strength received by the device.
Is country X on my network list?Go to the Network Lists in the Onomondo App and click the "edit" button to view / add / remove networks from the list.
Toggling cellular technologies on a SIMYou can change which technologies (2G/3G/4G) the network will allow the device to connect to.
Can I disable NB-IoT on a SIM?
Why can I not see historical SIM data in the Onomondo app?Usage records, Network Logs, and Signaling Logs are stored for no longer than 90 days.
Can I track to location of my SIM over time?We do not store this information, but it can be done via Location Update webhooks
My device is connecting on 4G, but I want it to use 2G only.Toggle enabled technologies on the individual SIM page.
Why does AT+COPS return previously rejected network as "available"?FPLMN is not always updated after a single rejection or failure to register.
AT+CGREG: Modes, parameters, and examplesThis article is a practical overview of how to use the AT+CGREG command.
AT+CEREG: Modes, parameters, and examplesThis article is a practical overview of how to use the AT+CEREG command.
AT+COPS: Modes, parameters, and examplesThis article is a practical overview of how to use the command.
Why you shouldn’t tell your IoT modems to attach/detachUsing AT+COPS=0 and AT+COPS=2 to attach / detach modems to / from the network is often a bad idea.
User access issues
Having trouble logging into the app?
I cannot log in to the Onomondo appClear your browser data and/or reset your password.