eSIM provisioning is the hidden flow that turns a QR code or activation code into a working mobile line. The phone’s LPA contacts the SM-DP+ server, authenticates through GSMA-backed certificates, downloads a protected profile package, installs it into the eUICC secure chip, and then uses that p...
Source: [HackerNoon](https://hackernoon.com/how-esim-provisioning-works-euicc-sm-dp-qr-codes-and-security?source=rss)