Consumer eSIM (SGP.22) assumes a human with a phone tapping through menus. IoT devices have neither. SGP.32 is the GSMA standard that fixes this: it lets a server manage profiles across a whole fleet of eUICCs, no UI required.
The moving parts
- eUICC. The secure element in the device that stores one or more profiles.
- eIM (eSIM IoT Manager). The server that tells devices which profile to download, enable or switch. Simsonic runs this for you.
- Profile. The operator subscription that gets downloaded over the air.
Why it matters
You can change a fleet’s operator after deployment, recover devices stuck on a dead network and ship a single hardware SKU worldwide that gets its local profile after install. No truck rolls, no SIM swaps.
Tip
SGP.32 and multi-IMSI solve different layers. SGP.32 swaps the whole profile; multi-IMSI switches identities inside one profile. Simsonic uses both, so you get the right tool automatically.