A1 Bulgaria: 2G and 3G shutdown dates
Updated
A1 Bulgaria has no 2G shutdown date we could confirm and plans to switch off 3G on 31 December 2025, according to the sources we checked on 26 October 2026. The table gives each source and how far we trust it; the rest of the page says what this means for IoT devices in Bulgaria.
2G and 3G status at A1 Bulgaria
| Network | Status | Date | Confidence | Sources and notes |
|---|---|---|---|---|
| 2G | Unclear | none | low | emnify.com emnify only lists 'Planned closure' with no date; no A1 statement found. |
| 3G | Planned | 31 December 2025 | low | korewireless.com, emnify.com KORE lists 'Shutdown in progress' with 2025-12-31; emnify lists 'Planned closure'. Date has passed; no confirmation of completion found. |
Confidence is high when the operator or the regulator states the date, medium when several independent sources agree, low otherwise. We recheck every month.
What it means for IoT devices on A1 Bulgaria
- 2G status unclear. Test a 2G device on site before relying on A1 Bulgaria's 2G network.
- 3G works until the shutdown (31 December 2025). Devices that rely on 3G should move to 4G before then.
- For new devices, choose 4G-based technologies: LTE Cat-1 bis, LTE-M or NB-IoT where the network offers them.
- Foreign SIMs in Bulgaria: permanent roaming is governed by the EU roaming regulation, which generally allows it under wholesale agreements between operators. Details on the Bulgaria page.
An M2M.global IoT SIM is not tied to a single network in a country, and its data can reach your cloud without the internet through private delivery.
Other operators in Bulgaria
| Operator | 2G | 3G |
|---|---|---|
| Vivacom | Unclear | Unclear |
| Yettel Bulgaria | Unclear | Planned, 31 March 2027 |
All operators and both rules for Bulgaria: IoT connectivity in Bulgaria. Every country: 2G and 3G shutdown dates by country and operator.
Frequently asked questions
When does A1 Bulgaria switch off 3G in Bulgaria?
A1 Bulgaria plans to switch off 3G on 31 December 2025. KORE lists 'Shutdown in progress' with 2025-12-31; emnify lists 'Planned closure'. Date has passed; no confirmation of completion found.