To deliver the best possible speed and coverage throughout Bulgaria, WorldESIM collaborates with the country's leading Tier-1 networks. Our eSIMs typically connect to premium providers such as A1, Yettel (formerly Telenor), or Vivacom. This ensures access to fast 4G/LTE and often 5G speeds, whether you're exploring the ancient city of Plovdiv, skiing in Bansko, or navigating the capital Sofia.
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Which local mobile networks does WorldESIM partner with in Bulgaria (A1, Yettel, Vivacom)?
Updated April 22, 2026
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