To give you the best speed and coverage, our eSIM connects to Bulgaria’s premium Tier-1 networks, typically A1, Yettel (formerly Telenor), or Vivacom. This ensures you get the fastest available 4G/LTE (and 5G) speeds, whether you are in Sofia, Plovdiv, or Varna.
HELP CENTER
Which networks does Bulgaria eSIM use? (A1, Yettel, Vivacom)
Updated April 22, 2026
Was this answer helpful?
Related questions
Other answers in this topic that travelers found useful.
Does AT&T or T-Mobile work in Panama?
No! This is a common mistake. Although Panama uses the US Dollar, it is an independent country and NOT part of any US domestic plan. Most ho…
Read answerWhat's the best eSIM for Phuket, Thailand?
For reliable mobile data in Phuket, an eSIM from providers like EastESIM is highly recommended. These eSIMs typically utilize major Thai net…
Read answerDoes this eSIM work in Russia?
This specific plan is valid only within Belarus . This is a critical point as many travelers combine trips (e.g., train from Minsk to …
Read answerDoes Yandex Go or CarGo work in Belgrade?
Yes. Uber does not operate in Serbia , so reliable data is essential to use local apps like CarGo or Yandex Go to get around Belgrade …
Read answerIs mobile data free in Ukraine?
No! This is the #1 roaming trap. Ukraine is NOT a member of the European Union (EU). Your "Roam Like at Home" (RLAH) plan does not apply . M…
Read answer