If you are looking for the best sim card in Bulgaria with prepaid data then I am sure I can help you. Lately I took a trip to Bulgaria to explore the capital Sofia and since I am a nomadic traveler I don’t have a mobile phone contract. After a smooth and cheap metro ride took me from Sofia Airport to the city center I tracked down the Bulgaria mobile internet operators and checked out their prices and packages for a prepaid sim card in Bulgaria. Updated January 2020!