SIM Cards and Internet in Bulgaria

Three Main Mobile Providers

Bulgaria has three mobile network operators. A1 Bulgaria (formerly Mtel) has the widest coverage, especially in rural and mountainous areas, making it the best choice for travelers exploring beyond the cities. Yettel (formerly Telenor) offers competitive tourist plans and good urban coverage. Vivacom is the legacy national operator with strong coverage and often the cheapest prepaid options. All three operate on 4G/LTE networks with good speeds in cities and along major highways. 5G coverage is expanding in Sofia and Plovdiv but remains patchy elsewhere.

Where to Buy a SIM Card

The easiest place to buy a SIM is at Sofia Airport — A1 has a kiosk in the Terminal 2 arrivals hall that is open for most incoming flights. Yettel and Vivacom do not have airport counters, so A1 is the default choice on arrival. In Sofia, all three providers have flagship stores on Vitosha Boulevard and in Mall of Sofia, Paradise Center, and The Mall. In Plovdiv, look for shops on the main pedestrian street (Knyaz Alexander I) and in Plovdiv Plaza Mall. In Varna, provider shops are found on Knyaz Boris I Boulevard and in Grand Mall. You can also find prepaid SIM cards at some supermarket chains and phone accessory shops. You will need your passport to register a SIM card, as required by Bulgarian law. The process takes about 10-15 minutes including activation.

Tourist SIM Prices and Plans

A prepaid tourist SIM card typically costs €5-8 and includes 20-30 GB of data valid for 30 days. Some plans are data-only, while others include a small bundle of domestic minutes and SMS — ask specifically if you need voice calling for local bookings or taxis. Data-only plans tend to offer more gigabytes for the price, so if you rely on WhatsApp or Viber for calls, a data-only option is the better value. For shorter visits, some providers offer 7-day data packages starting at €3-4. Ask for the "prepaid tourist" or "tourist SIM" option specifically — regular prepaid plans may offer less data for the same price.

Topping Up Credit

Top-ups are available at provider shops, post offices, ePay terminals (found in most supermarkets and petrol stations), and many convenience stores. A1 and Yettel also support online top-ups via their apps or websites using a foreign credit card. If you run out of data, adding a 10 GB data bolt-on typically costs €4-5. Keep your SIM card receipt — you may need the PUK code if the phone locks. For longer stays, monthly rolling plans offer better value than repeated top-ups.

EU Roaming

Bulgaria is an EU member state, so if you have a SIM card from another EU country, you can use your domestic plan in Bulgaria at no extra charge under EU roaming regulations. This applies to calls, texts, and data. Check your provider's fair usage policy, as some plans cap roaming data at a lower amount than your domestic allowance — typically 10-15 GB per month for roaming even if your domestic plan includes more. UK travelers should note that since Brexit, EU roaming guarantees no longer apply to UK plans. Most UK providers now charge 2-5 GBP per day for roaming in the EU, making a local SIM or eSIM a much cheaper option for stays longer than two days. Travelers from the US, Canada, Australia, and other non-EU countries will face high roaming charges — a local SIM or eSIM is strongly recommended.

eSIM Options

If your phone supports eSIM (iPhone XS and later, most Android flagships from 2020 onward), services like Airalo, Holafly, and Nomad offer Bulgaria data-only eSIMs that you can purchase and activate before arrival. Airalo offers Bulgaria-specific plans starting at around 5 USD for 1 GB (7 days) up to 16 USD for 5 GB (30 days). Holafly offers unlimited data plans starting at about 19 EUR for 5 days. These are data-only — no local phone number for voice calls. The advantage is being connected the moment you land without visiting a shop, which is especially useful if you arrive on a late flight when the A1 kiosk may be closed. Regional Europe eSIM plans can be better value if you are visiting multiple countries. Install the eSIM profile before departing — some phones limit the number of eSIM profiles you can store.

Wi-Fi Availability

Wi-Fi is widely available in Bulgarian hotels, hostels, restaurants, and cafes in cities and tourist areas. Most accommodations offer free Wi-Fi, though speeds vary — budget hostels may have slow shared connections while mid-range and upscale hotels generally provide reliable speeds. Chains like Starbucks, Costa Coffee, and Happy Bar and Grill offer free Wi-Fi, as do most shopping malls. Sofia, Plovdiv, and the major Black Sea resorts have generally reliable connections. Sofia also has free municipal Wi-Fi (Sofia Free Wi-Fi) in some parks and public spaces, though it can be unreliable. In rural areas and smaller villages, Wi-Fi can be patchy or slow. For remote hiking or mountain trips, do not rely on Wi-Fi — a local SIM with data is essential. See the budget travel guide for tips on minimizing connectivity costs during your trip.

Useful Apps for Bulgaria

Download these apps before or during your trip: Moovit for public transport navigation in Sofia and other cities, TaxiMe or Yellow Taxi for ordering taxis safely, Google Translate with the Bulgarian language pack for offline translation, and Maps.me or Google Maps with offline maps for getting around without data coverage. Having at least one offline map app is essential as a backup — even with a SIM card, mobile signal drops in mountain areas and rural valleys.