Bulgaria coverage

What the Bulgaria numbers mean

Two numbers matter and only one of them is the one every seller quotes. The typical speed, 72 Mbps, tells you what a good moment looks like.

The tenth percentile, 19 Mbps, is the one that matters. It is the speed in the worst tenth of the day, when the cell above the station is full and everybody around you is on it too. A country with a high median and a low floor is a country that works beautifully right up until the moment you actually need it.

If the trip depends on video calls or tethering, plan around the busy figure rather than the typical one.

What happens in Bulgaria when the network is busy

Congestion is not a fault, it is a Tuesday evening. The question is what your eSIM can do about it, and for most travel eSIMs the answer is nothing: one wholesale agreement per country, one network, and no way out except buying a second eSIM from somebody else while standing in the street.

Here, Orbislo traffic runs over A1 and Yettel. When the network you are on degrades we move you to another one, mid trip, without you asking, and tell you afterwards rather than interrupting you at the time.

Network notes for Bulgaria

• At the end of 2025, 4G networks covered more than 99 percent of Bulgaria's population and 91 percent of its territory, according to the Communications Regulation Commission's annual report.
• 5G covered 92 percent of Bulgaria's population and almost 66 percent of its territory at the end of 2025, the regulator reports, with coverage expected to keep growing, so much of the countryside is still 4G only.