Yes, it works. Particle welcomes 3rd party SIMs. HOWEVER, depending on your application, you may not like the results. Here’s why:
The Hologram SIM, working on the Particle Electron, will log on to a cell tower and connect to Particle’s Dashboard. You will see your data on Particle, and you pay Hologram for the data. So far, so good. Here’s where it gets complicated: The Particle board uses UDP communication, and sets a 23 minute keep-alive ping to keep that connection alive, in line with what their own SIM is set to use with the various telco’s. The Hologram SIM times out much quicker (maybe around 3 minutes or so), and drops the UDP connection. To keep the UDP connection alive, you can set a more frequent keep-alive ping on a Particle Electron (they have an IDE-level function for that), but that will quickly use your data. The figure is something like 1MB / 3 days. So the Konekt SIM, on Particle, works – but to get the same functionality it’s actually more expensive than Particle’s own SIM. There’s a lot of discussion over on Particle.io about this topic; search for UDP and/or Timeout and/or APN in their Community. Note: You also need to set the Particle Electron to the APN value when using the Hologram SIM ("apn.konekt.io). Hope that helps. Summary: Each company’s SIM seems well-suited to their own hardware, but some cross-pollinzation may occur!