Official side event of
Sponsored by
Held · September 2026
The first impartial end-to-end interoperability test on a live network.
The plugfest has taken place. Over two days in Amsterdam, independent eIMs, eUICCs and IPA implementations met on a live network — not in a lab — to measure what actually works across vendors.
The purpose
Why it was run
Every vendor can claim SGP.32 compliance. That does not show whether their products work together.
SGP.32 is sold as the standard that ends lock-in and makes IoT connectivity portable. A self-declared compliance badge tells a buyer nothing about whether one vendor's eIM can manage another vendor's eUICC in the field.
Until this plugfest, nobody had measured that independently. The test is done. The full dataset — passes named, failures aggregated, methodology published — comes out in November.
Compliance vs. interoperability
What was done
Twenty-two cells, and nobody played at home.
Four eIMs, four eUICCs and two module-side IPA platforms. Every cell crossed a company line and was set to run the same profile lifecycle, on both direct and indirect download paths.
- 01
Bootstrap and first network attach
Each device came on-network, and the baseline attach path was confirmed before any profile operation.
- 02
Profile download — direct (HTTPS) and indirect (CoAP)
Both download paths were exercised across vendor boundaries, and the result was recorded for each transport.
- 03
Profile enable and multi-operator switch
Downloaded profiles were enabled and switched between operators — the operations an enterprise fleet depends on.
- 04
Rollback on failure
Recovery was checked when a download or switch failed, with the result recorded for every cell.
- Block A
IPAe cross-vendor
Each independent eIM drove a profile into an eUICC it didn't make — the primary cross-vendor profile-management path.
- Block B
IPAd implementations
External eIMs drove the modem-side IPA path, including constrained-device behaviour and a direct-versus-indirect comparison.
The insights
What showed up when the vendors met.
These are the patterns from the two days. The cell-by-cell matrix is in the November report.
The output
The first independently measured SGP.32 interoperability report.
The full matrix publishes in November 2026. The findings above are already public.
What comes next
- 01
The patterns, already shared
Where the pairings stalled, and what a buyer should ask before a pilot. Linked from the notes above.
- 02
The independent dataset
The cross-vendor result matrix: passes named, failures aggregated and never named, with the methodology published in full.
Notify me
Get the report when it publishes
One email when the independent interoperability report lands. No spam.
No spam. One email when the report publishes.
The position
SymbIoT convened the plugfest as the neutral coordinator — an impartial player that recorded every result and will publish the cross-vendor dataset so the market can trust what was measured.
