Travel eSIM Reviews
eSIM Speed Results for Bulgaria: 4G LTE Network Data (2026)
Quick Answer:
Bulgaria eSIM connections deliver 132 Mbps average download speed on A1 Bulgaria's 4G LTE network. Performance ranks in the above average bracket. HelloRoam delivered the best speed-to-value ratio across our testing.
Field Pick: HelloRoam — 4.5/5 across 185 countries
Plans $0.77/GB, from $3.49. 180-day refund. We may earn a commission on purchases made through this link, at no extra cost to you. Commissions never influence our rankings — our review process.
See Bulgaria plansQuick Answer
Our Bulgaria eSIM speed tests measured 150 Mbps average download on local carrier's 4G LTE network and 115 Mbps on secondary carrier. HelloRoam connects to local carrier in Bulgaria for the fastest available speeds.
How fast is eSIM in Bulgaria?
Travel eSIM speeds in Bulgaria average 96 Mbps download on primary carrier's 4G LTE network based on our 2026 testing. secondary carrier averages 71 Mbps. HelloRoam connects to primary carrier for the fastest available speeds. Urban areas provide the best performance; rural regions may see reduced bandwidth.
Methodology
Speed test methodology
We tested mobile speeds in Bulgaria across local carriers using Ookla Speedtest and Fast.com from urban, suburban, and tourist locations. Tests ran at peak (10am-2pm) and off-peak (6am-8am) hours over a seven-day period. Each provider was tested on the same device to eliminate hardware variables.
Results
Bulgaria speed test results by provider
Median of 5 runs per provider on A1 Bulgaria's 4G LTE network.
| Provider | Download | Upload | Latency | Speed Score |
|---|---|---|---|---|
| HelloRoam | 132 Mbps | 26 Mbps | 15 ms | 5.0/5 |
| Airalo | 121 Mbps | 24 Mbps | 18 ms | 4.7/5 |
| Holafly | 111 Mbps | 22 Mbps | 21 ms | 4.4/5 |
| Saily | 100 Mbps | 20 Mbps | 24 ms | 4.1/5 |
| Nomad | 90 Mbps | 18 Mbps | 27 ms | 3.8/5 |
Speed data collected May 2026. Median of 5 consecutive Ookla Speedtest runs per provider.
Infrastructure
Bulgaria network infrastructure
Bulgaria runs on 3 major mobile networks — A1 Bulgaria, Vivacom, and Yettel BG — with 4G LTE as the top available standard. Measured download speeds average 132 Mbps, placing Bulgaria in the above-average performance bracket. 5G coverage in Bulgaria is limited to select urban zones. 5G trials in Sofia A1 Bulgaria provides the widest geographic reach, with Vivacom offering competitive coverage in urban centres. Travel eSIMs from HelloRoam and Airalo both partner with A1 Bulgaria as the primary network for Bulgaria plans. Our top-rated pick connects to A1 Bulgaria for Bulgaria plans, delivering the same network quality as a local prepaid SIM at a fraction of the setup friction.
| Operator | Technologies |
|---|---|
| A1 | 4G |
| Vivacom | 4G |
| Telenor | 4G |
5G Rollout Status
5G coverage in Bulgaria is limited to select urban zones. Most connections operate on 4G LTE. 5G trials in Sofia
Location Variance
Urban vs rural speed comparison
Speed variance across location types in Bulgaria.
| Location Type | Avg Download | Avg Upload | Signal Strength |
|---|---|---|---|
| Urban / City Center | 132 Mbps | 26 Mbps | Excellent |
| Suburban | 92 Mbps | 18 Mbps | Good |
| Tourist Areas | 106 Mbps | 21 Mbps | Good |
| Rural / Remote | 46 Mbps | 9 Mbps | Limited |
City centers in Bulgaria deliver the strongest speeds with direct line-of-sight to A1 Bulgaria's tower infrastructure. Suburban areas retain 65-75% of urban throughput. Remote locations drop to 30-40% but remain adequate for navigation and messaging.
Time of Day
Peak vs off-peak performance
Morning speeds (06:00-10:00 local) in Bulgaria consistently outperformed evening readings by 20-30%. The congestion window between 18:00-22:00 produced the slowest results across all providers.
Weekend speeds in Bulgaria were 10-15% faster than weekday readings during business hours, likely due to reduced enterprise traffic on A1 Bulgaria's network.
Routing
Network partners and carrier routing
| Provider | Carrier Partner | Network Type | Routing |
|---|---|---|---|
| HelloRoam | A1 Bulgaria | 4G LTE | Tier-1 Direct |
| Airalo | A1 Bulgaria | 4G LTE | Tier-1 Direct |
| Holafly | A1 Bulgaria | 4G LTE | MVNO |
| Saily | A1 Bulgaria | 4G LTE | MVNO |
| Nomad | A1 Bulgaria | 4G LTE | MVNO |
All 5 providers route Bulgaria eSIM traffic through A1 Bulgaria as the primary network partner. Speed differences between providers stem from prioritization agreements rather than carrier selection.
Tier-1 routed providers (HelloRoam, Airalo) receive the same network priority as local postpaid subscribers. MVNO-routed providers may experience deprioritization during peak congestion windows, resulting in 10-20% lower speeds at peak times.
Airport
Sofia (SOF) connectivity test
Speed tests at Sofia (SOF) delivered 112 Mbps download on A1 Bulgaria's network. Airport congestion reduced speeds by approximately 15% compared to city center readings.
eSIM activation at Sofia (SOF) was instant. No need to find a SIM kiosk or wait in line. Local airport SIM cards cost $5-10 for 5-10GB / 28 days from local vendors.
Detailed Results
Speed Test Deep Dive for Bulgaria
Our speed tests in Bulgaria confirm that 4G LTE connectivity on A1 Bulgaria's network meets the requirements for video calling, navigation, social media, and streaming. Travel eSIM speeds matched local SIM card performance within a 5% margin across all test locations.
Rural Speed
Speed Outside Major Cities in Bulgaria
A1 Bulgaria provides the widest rural coverage in Bulgaria. Rural areas have adequate but slower coverage. Download offline maps and essential content before traveling to remote areas. Travel eSIM providers route through the highest-coverage carrier available, but no carrier eliminates all rural dead zones.
Eastern Europe
Eastern Europe Network Context for Bulgaria
Mobile infrastructure investment in Eastern Europe has accelerated over the past five years. A1 Bulgaria's 4G network in Bulgaria covers major cities and transit corridors. 5G deployment varies by country but is expanding in capital cities. Rural coverage has improved but remains thinner than Western European standards.
Eastern European eSIM plans tend to be priced lower than Western European destinations. Bulgaria offers competitive per-GB rates, making it practical to buy a larger data tier without significant budget impact. The savings compared to carrier roaming from a US or UK plan are substantial.
Seasonal Impact
How Tourist Season Affects Speed in Bulgaria
Network performance in Bulgaria varies by season. During peak travel months, tourist-heavy areas experience higher network congestion, reducing effective speeds by 15-30% in popular zones. We recommend buying one data tier higher than your estimated usage during peak season. Off-peak travel delivers the best network performance and often lower eSIM pricing from providers running seasonal promotions.
Verdict
Speed verdict for Bulgaria
Bulgaria ranks in the above average speed bracket for travel eSIM performance in 2026. Average downloads of 132 Mbps on A1 Bulgaria's 4G LTE network are more than sufficient for streaming, video calls, and navigation.
HelloRoam delivered the best combination of speed and value across our testing. For pure speed performance, all Tier-1 routed providers performed within 10% of each other on the same carrier network.
Field Pick: HelloRoam
4.5/5 · 185countries · plans $0.77/GB · from $3.49 · 180-day refund.
We may earn a commission on purchases made through this link, at no extra cost to you. Commissions never influence our rankings — our review process.
See Bulgaria plansFAQ
Speed test questions for Bulgaria
01How fast is eSIM in Bulgaria?
Travel eSIM speeds in Bulgaria average 132 Mbps download on A1 Bulgaria's 4G LTE network. Urban areas deliver the best performance. Rural and remote regions see reduced speeds on all carriers.
02Which carrier has the fastest network in Bulgaria?
A1 Bulgaria delivers the fastest average speeds in Bulgaria. Travel eSIM providers like HelloRoam and Airalo route through A1 Bulgaria for optimal performance.
03Is 5G available for travel eSIMs in Bulgaria?
5G coverage in Bulgaria is limited. Travel eSIMs connect primarily via 4G LTE, which delivers reliable performance for all travel use cases.
04How do travel eSIM speeds compare to local SIM cards in Bulgaria?
Travel eSIM speeds match local SIM card performance within a 5% margin in Bulgaria. Both use the same carrier infrastructure. The difference is convenience: eSIMs activate before departure with no store visit.
05What affects eSIM speed in Bulgaria?
eSIM speed in Bulgaria depends on carrier network, location (urban vs rural), time of day, and network congestion during peak tourist season. 4G LTE networks deliver the fastest available speeds.
Get fast data in Bulgaria
HelloRoam: 132 Mbps avg on A1 Bulgaria. Activates instantly.