CoreTelephony eSIM functions not working on device

Question

I\'ve been having some trouble implementing eSIM into an existing iOS carrier-application.

The setup

• The app has received the

Answer 1

Apple documentation of class CTCellularPlanProvisioning which have supportsCellularPlan() instance function:

Overview

This class is only available to carrier apps with suitable entitlements.

Therefore we need to request for eSIM entitlement using developer account. Manual can be found here.

Answer 2

So... after a lot of trial an error I was able to solve this little issue.

There are 2 things to know about supportsCellularPlan() (other then having the eSIM entitlements of course).

First:
You need to have WiFi enabled for it to work as it seems to need to connect with Apple for some checks.

Second:
It requires the CarrierDescriptors to be entered correctly in your info.plist as it is carrier-bound.

Once you have that, it should work as expected.