A1 — Bulgaria

A1 in Bulgaria: network and frequencies

A1 is a mobile network operator in Bulgaria. It runs 5G on 3 bands and 4G/LTE on 5 bands.

Its low bands (≤ 900 MHz) favor indoor and rural coverage, while its high bands (≥ 2600 MHz including n78 at 3.5 GHz) deliver throughput in dense areas.

To pick up this network, your phone must support these same frequency bands. Use the checker above to compare your model band by band.