The switch between two different plans is done automatically when you move from one country to another during your trip. This means you don’t have to do anything, Ubigi takes care of everything: as soon as you arrive in a country, your Ubigi eSIM profile automatically captures the local network and accordingly activates the data plan dedicated to that country (provided that you have of course purchased it beforehand).
For example: you are traveling from France to Italy, and you have purchased a FRANCE data plan and an ITALY data plan. When you are in France, your data consumption will be deducted from your FRANCE data plan. Once in Italy, your data consumption will be automatically deducted from your ITALY data plan.