If I have a European (EU) or UK SIM card, will I incur roaming charges in Montenegro, or is it free?

It's important to be aware that while Montenegro is a beautiful European destination and even uses the Euro, it is not a member of the European Union. This means that your 'Roam Like at Home' plan, which typically applies within the EU, will not cover your usage here. Most EU and UK carriers, such as Vodafone, O2, or T-Mobile DE, will charge significant roaming fees for data, calls, and texts. HotelESIM offers a cost-effective alternative, allowing you to enjoy seamless connectivity without the worry of unexpected bills.