Does a CoreESIM plan designated for Hungary extend its validity to neighboring non-EU countries such as <strong>Serbia</strong> or <strong>Ukraine</strong>?

A CoreESIM plan configured specifically for Hungary provides service exclusively within Hungary and, by extension, within the EU/EEA zone if it's a regional EU plan. It does not cover non-EU countries. If your travel itinerary includes destinations like Serbia (Belgrade) or Ukraine, your data connectivity will cease upon exiting the EU customs area. For such multi-country European tours, CoreESIM recommends either a broader European regional plan that specifically includes these non-EU nations or individual country-specific eSIMs to ensure continuous service.