Depending on your phone model, you can verify the activation as follows.
iOS
- Go to Settings.
- Tap on Cellular.
- You should see the Free Roaming line installed, and it should be displayed as active.
- Make sure the eSIM is set as the default for mobile data usage.
Android
- Go to Settings.
- Tap on Connections.
- Then go to SIM Card Manager.
- The Free Roaming line should be displayed as installed and active.
- Make sure the eSIM is set as the default for mobile data usage.