SGP.32 is a new standard that requires you to make certain choices about the hardware and SIM type you use. In order to make the most out of it, you will need a certain type of eUICC and a device that can accommodate for an IPA (IoT Profile Assistant).
What you need
An SGP.32-compliant eUICC. SGP.32 support lives in the chip itself, so older chips cannot be upgraded with a software update.
An IPA, either built into the chip (IPAe) or in your firmware (IPAd). If you use the IPAe, your modem also needs to support it. See IPAe vs IPAd for comparison.
A data connection that can reach the eIM over HTTPS.
Option A: Use Onomondo SIMs
The SGP.32 eUICCs we ship are validated against our eIM, so we can stand behind them end-to-end.
Option B: Use SIMs from other vendors
In principle, any SGP.32-compliant eUICC should work with any compliant eIM. In practice, implementations differ in small details, so we handle it case by case.
SGP.32 chips communicating over HTTPS are the most likely to work.
Test a sample before you commit to a larger rollout.
We add chips to our validated list as we test more implementations.
Frequently asked questions
What if my eUICC chips are already connected to another vendor's eIM?
They can be connected to Onomondo, but that vendor has to cooperate. We provide an eIM configuration (our address and the credentials your chips need to trust us), and the current eIM provider sends it to the chips.
For new chips, or chips with no dedicated eIM yet, our configuration can be added locally on the device or during production.
Which communication protocols are supported by the eIM?
The Onomondo eIM currently supports HTTPS with ASN.1 encoding. You don't need to choose an encoding yourself: it's determined by your chip.
I have a fleet on older SIMs. Can I switch to SGP.32?
Not in place, because the chip itself has to be SGP.32. The easiest route is to start deploying SGP.32 eUICCs now. They work as regular SIMs from day one, and you can start managing profiles remotely whenever you're ready, with no hardware swap. Existing devices can move over on their normal replacement cycle.