SM-DS discovery
The problem with eSIM discovery is that I have no way to test this properly. If anyone has a way to test, contributions are welcome.
it is recommended to support ePIN input.
There's nothing called the ePIN in the eUICC standard. If ePIN just means confirmation code, then something else must have caused the download failure. In that case logs are required to diagnose why.
refactor: open sim toolkit logical