How Bulgaria scored
Our Bulgaria assessment evaluated 5 eSIM providers across 3 carrier networks. A1 Bulgaria handles 4G LTE routing for all providers in this market. We compared 7 plans ranging from $2.21 to $8.06. A1 Bulgaria publishes 4G LTE in Bulgaria, which is the tier the network score reads.
Bulgaria's 3 networks give providers real carrier options: A1 Bulgaria, Vivacom, and Yettel BG. A1 Bulgaria is the primary routing partner for all five providers, on published coverage breadth.
The pricing ladder spans from 1GB at $2.21 ($2.21/GB) to 20GB at $17.03 ($0.85/GB). Best per-GB value sits at 10GB for $8.06 ($0.81/GB), our recommended tier for most Bulgaria travelers. Holafly adds an unlimited daily option from $2.99/day, which suits heavy data users on trips of 5+ days. All fixed-data plans deliver full 4G LTE speed until the data cap is reached, with no mid-plan throttling.
A1 Bulgaria's 4G LTE coverage spans Bulgaria's main population centers and tourist corridors. Rural coverage depends on A1 Bulgaria's tower density in less populated areas.
Our editorial verdict places HelloRoam first for Bulgaria (9.5/10), followed by Airalo (9.3/10). These scores reflect Bulgaria-specific conditions: A1 Bulgaria routing, 7 available plans, and 4G LTE as the network standard. Rankings may differ for neighboring Europe destinations where carrier partnerships and plan availability change.
What the rubric scores
The rubric ranked 7 eSIM plans from 5 providers for Bulgaria on five dimensions: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), Support access (15%). Each provider takes a 1-5 mark per dimension, and the weighted total is doubled to give the /10 display score.
Where the inputs come from
Scores for Bulgaria use the published weighted formula: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), and Support access (15%). Each dimension receives a raw score from 1 to 5. The composite multiplies by 2 for a 0-10 display scale. Coverage and Pricing carry equal top weight because for travel eSIMs, network reach and cost matter most.
Country-specific adjustments for Bulgaria: Unlimited plan availability in Bulgaria adjusts the Pricing dimension to weight per-day unlimited rates alongside per-GB fixed rates. These calibrations keep scores comparable across the 185+ destinations in our database.
The scoring spread across 5 providers for Bulgaria is 1.5 points (HelloRoam at 9.5/10 down to Nomad at 8.0/10). A spread under 1.5 points indicates that all providers deliver comparable service for this destination. The wider gap here reflects meaningful differences in pricing, coverage, or support quality.
Read the full scoring rubric.
BesteSIM runs no speed tests and publishes no throughput figure for Bulgaria. The network-tier score reads the technology each carrier publishes, which is 4G LTE here.
Bulgaria Network Landscape
Bulgaria has 3 mobile networks: A1 (4G), Vivacom (4G), Telenor (4G). A1 Bulgaria delivers the strongest coverage combination. All 5 providers route through these carriers.
Carrier Partnerships
Bulgaria operates 3 mobile networks: A1 (4G), Vivacom (4G), Telenor (4G). A1 Bulgaria serves as the primary routing partner for travel eSIMs in this market. All five ranked providers maintain routing agreements with A1 Bulgaria. Some providers additionally route through Vivacom as a fallback when A1 Bulgaria's signal weakens.
A1 Bulgaria publishes 4G LTE across Bulgaria, and every ranked provider attaches to it rather than to a network of its own. With 3 networks accepting eSIM roaming, Bulgaria offers strong carrier diversity. Signal handoffs between A1, Vivacom, and Telenor keep connections stable across geographic boundaries.
All five providers converge on A1 Bulgaria for Bulgaria. The routing uniformity means the network and coverage scores reflect A1 Bulgaria's published footprint rather than provider-specific agreements. The differentiators shift to app features, support languages, refund terms and plan pricing.
Review Timeline
Plans and pricing for Bulgaria were last verified in May 2026. All 7 plans confirmed active on A1 Bulgaria's 4G LTE network. Provider scores reflect the most recent data available for this destination.
We review Bulgaria rankings quarterly and after any major network change (carrier merger, 5G rollout, new provider entry). Price updates are checked monthly. If A1 Bulgaria launches a new network tier or a provider adjusts Bulgaria plan pricing, scores are recalculated within 2 weeks.
Best
France
Germany
Turkey
United Kingdom
Italy
Spain