After eSIM activation, your device starts using both your physical SIM card and the eSIM at the same time.
When you are in the supported country, the eSIM is automatically connected to the DENT mobile network and it will appear in the status bar at the top of your screen.
Then turn off Wi-Fi and turn on Mobile Data.
Try Googling something to check if you have an internet connection.
Enjoy 4G & LTE