SoftSIM
Try out our 100% software-based SIM.
Can I use an Onomondo SoftSIM in my phone?No. Onomondo SoftSIMs are only supported on specific radio modules.
Getting started with Onomondo SoftSIM
Supported on selected Nordic Semi, SIMCom and Quectel modules
Getting Started with the Onomondo SoftSIMThis article provides an overview of the basic steps required to set up the Onomondo SoftSIM.
SoftSIM CLI tool for provisioning SoftSIMThe SoftSIM CLI tool helps with provisioning your SoftSIM-enabled device before and during production.
How to integrate the Onomondo SoftSIM with the nRF91 Series from Nordic SemiconductorThis guide provides a walkthrough of how to set up the Onomondo SoftSIM with the nRF91 Series from Nordic Semiconductor.
How to integrate the Onomondo SoftSIM with the A7672 Series from SIMComThis guide provides a walkthrough of how to set up the Onomondo SoftSIM with the A7672 from SIMCom.
How to integrate the Onomondo SoftSIM with the EG21-G / EG21-GL / EG25-GL from QuectelThis guide provides a walkthrough of how to set up the Onomondo SoftSIM with the EG21-G / EG21-GL / EG25-GL from Quectel.
How to test SoftSIM on Quectel’s UNISOC modules?Although not paired with an official firmware release, SoftSIM can be tested on Quectel EG912 and EG915U series modules, just to name a few.
SoftSIM FAQ
Fetching profiles, provisioning and technical questions
Which radio modules currently support SoftSIM?SoftSIM is currently available for testing on a few selected devices.
What are the minimal requirements for flash, heap and stack usage when using SoftSIM?The sample project takes up ~110 kB. The heap allocation of SoftSIM is fixed, while flash memory usage can be optimized.
Can I fetch SoftSIM profiles to an existing profiles.json file?No, it is not possible.
Can I fetch SoftSIM profiles more than once?No, the API is guaranteed to only return each profile once.
Is it possible to move SoftSIMs between devices?Yes, it is possible, BUT we strongly advise against doing so. This may lead to connectivity issues.
Which nRF modem firmware supports SoftSIM?All modem firmware versions above (and including) 1.3.4 are supported.
Can a SoftSIM be deprovisioned?No, this is not a feature available as a part of the nrf-softsim samples.
Can I use EdDSA methods to generate with Ed25519 algorithm?No, we only support RSA for key generation.
Is the length of a SoftSIM profile variable?Yes, the profile length is variable. It can be up to ~350 bytes long.
Why is SoftSIM taking longer to attach than physical SIM?This is normal and expected due to hardware-related implications.
Can I reduce nvs_storage partition in the SoftSIM file system?You can try to reduce it but it is generally not recommended to go below 32 KB.
SoftSIM Troubleshooting
Common issues and errors
Is there any way to reduce the memory footprint of the SoftSIM's code?No, but you can introduce a partitioning scheme within the nRF91 memory to optimize it.
I get "Failed to decrypt profile" error when decrypting SoftSIM profileYou are attempting to decrypt a profile with a different keypair than the API key it was fetched with.
I get "No more profiles are available" error when fetching SoftSIMYou have fetched all the available profiles assigned to your account. Please reach out to your CSM to request more profiles.
What does "Exiting with error" message mean?This error has multiple causes. Re-run the command with additional logging.
I get ERR: -134 when flashing SoftSIM profileDecrypt your SoftSIM profile with the next command before injecting it into your project.
I get "failed to load key" error when decrypting SoftSIM profileYour private key is password protected.