Mobile Phones, SIMs and Contracts in Bulgaria:
The British Expat's 2026 Guide

The 60-second answer

If you only read one section, read this one. Find yourself in the table; the rest of the guide explains why.

Prices verified May 2026. Operator pages re-check before signing: a1.bg, yettel.bg, vivacom.bg.

The three-operator market

Bulgaria is a three-network mobile country. For ordinary consumer SIMs there is no strong fourth choice in the way a UK reader is used to from giffgaff, SMARTY, VOXI and the rest of the MVNO crowd. The decision is which of A1, Yettel or Vivacom gives you the best mix of coverage, price, shop access and support at your address.

Market shares

The Communications Regulation Commission's 2024 annual report describes the Bulgarian mobile-internet market as served by three undertakings. The shares, by mobile-internet subscriber and by revenue, look like this:

Source: CRC Annual Report 2024 (PDF).

The revenue versus subscriber split is interesting: A1 has fewer subscribers than Vivacom but pulls 42% of revenue. That tells you something about average bill size. A1 is the operator that converts customers into higher-tier plans and device finance more effectively; Vivacom is the volume-priced one. Yettel sits in the middle on both metrics.

Quick operator profiles

A1 Bulgaria (formerly Mobiltel / M-Tel)

The premium-priced, premium-speed operator. Strong 5G rollout, strong device range, strong urban coverage. Owns the "fastest network" marketing position via Ookla Speedtest data for Q3-Q4 2025. Postpaid portfolio is Unlimited S, Unlimited M and Unlimited Ultra. Prepaid is anchored by Prepaid ULTRA 5G and Prepaid Mobile Internet 30 GB.

Yettel Bulgaria (formerly Telenor Bulgaria, formerly GLOBUL)

The middle child. Strongest Opensignal Reliability Experience score in the January 2026 report (957 points). Public 1-year plan page is the cleanest of the three to read. Postpaid portfolio is Total Unlimited 50, Total Unlimited 200 and (handset-bundle context) Total Unlimited MAX. Prepaid anchored by Hello Plus.

Vivacom (Bulgarian Telecommunications Company)

The incumbent, the broadband-fibre giant, and the operator most likely to be cheapest on a like-for-like unlimited plan if you also take fixed-line service. May 2026 promotion knocks 3 EUR/month off every Unlimited tier for customers with a fixed Vivacom service at the same address. Postpaid portfolio is Unlimited 20, Unlimited 200, Unlimited MAX. Prepaid is Free2Go. Bulsatcom is now folded into Vivacom's customer-support pages and is not a meaningful separate mobile choice in 2026.

What about a "fourth operator"?

There isn't one worth recommending. The Bulgarian MVNO market is thin: kiosk-grade resellers exist but none deliver the customer-service depth, English-language support or device subsidy that A1, Yettel and Vivacom can. Bulsatcom is part of Vivacom's ecosystem now. T.com / T-2 style branding does not have a consumer mainstream presence in Bulgaria in 2026. If a shop tries to sell you a fourth-brand SIM, ask whose network it actually rides on; the answer is one of the three.

Postpaid plans and prices, May 2026

Three tables, one per operator. Prices verified from each operator's public consumer pages on 22 May 2026 and are subject to promotional change. Treat these as the May 2026 baseline and re-check the operator page the week you actually sign.

A1 Bulgaria, Unlimited portfolio

A1's main mobile-plan page is dynamic and does not always expose every plan card cleanly. The clearest published source on 22 May 2026 was the device-checkout flow, which showed three Unlimited tiers with the same first-12-months / months-13-to-24 promotional structure.

Source: A1 device-checkout pages and the A1 Help bulletin "Pītuvai bez granitsi" (April 2026) on the new Unlimited portfolio.

Yettel Bulgaria, 12-month Total Unlimited

Yettel's 1-year plan page is the cleanest of the three. The 24-month gallery is harder to crawl publicly; ask in-store for the latest 24-month price if you want a longer lock-in for device finance.

100 EU minutes are included on Total Unlimited 50, 200 EU minutes on Total Unlimited 200. The MAX price comes from May 2026 handset-launch coverage, not the public plan gallery; verify directly with Yettel before relying on it.

Vivacom, Unlimited portfolio (May 2026 promo)

Vivacom's mobile-plans page is the easiest of the three to read at a glance. The promotion is for new or re-signing private subscribers on a 24-month contract, valid 1 March to 31 May 2026. The price with-fixed-service column is the killer if you also have Vivacom broadband at the address.

Non-EU bonus MB applies to selected countries including the UK, Turkey, Serbia, North Macedonia and Switzerland. Vivacom warns the country list may change; check on the day you travel.

Headline price comparison, like-for-like 200 Mbps tier

Two-year totals do not include device finance, activation fees, or post-promotional price changes. A handset bundle commonly adds 200-1,000 EUR over 24 months on top.

What "unlimited" really means

"Unlimited" in Bulgarian marketing means unlimited national data volume on a defined speed tier. It does not mean unlimited full-speed data, unlimited roaming, or unlimited everything-you-want.

Every Bulgarian unlimited plan has, in some combination:

• Unlimited national data measured in volume (no MB cap inside Bulgaria).
• A maximum download speed per plan: 20, 50, 200 Mbps or "MAX" (the network's top capability).
• A separate, finite EU roaming MB allowance (31,800 to 126,000 MB depending on plan).
• A separate non-EU roaming treatment, typically zero unless you have a top-tier plan with a small bonus.
• A fair-use policy banning resale, gateway use, machine-like SMS, business abuse and "use outside reasonable consumer consumption".
• A right for the operator to temporarily suspend after detecting abusive use, with SMS notice.

For a UK reader, the right shopping questions are not "is it unlimited?" (yes, all three are). They are:

1. What is the maximum download speed? 20 Mbps is browsing and basic streaming. 50 Mbps handles 4K on one device. 200 Mbps is multi-device home internet territory. MAX is "match my fibre".
2. Is 5G included? All three operators sell 5G coverage; check the map for your address.
3. How much EU roaming data? The 31,800 MB floor on Yettel TU 50 lasts a 2-week holiday with light streaming. The 126,000 MB on A1 Ultra is real "live and work from Spain" headroom.
4. Is the UK included? Sometimes, in operator-specific non-EU bonuses. Read the country list the week you travel.
5. What is the price after the promo ends? The headline is rarely the bill.
6. Can the operator throttle or suspend for "unreasonable" use? Yes. Read the fair-use clause before relying on the plan as a hotspot.
7. Is hotspot/tethering allowed in practice? All three permit consumer hotspotting; none welcome a phone-SIM-in-a-router that runs 24/7.
8. Is the price SIM-only or device-bundled? Bundles distort everything; ask for SIM-only first.

The fair-use clause in plain English

Vivacom's wording is the most explicit: the unlimited service is "not intended for resale, traffic generation, commercial use, gateway-type SMS/MMS traffic, or use outside reasonable consumer consumption". The operator reserves the right to temporarily suspend service after detecting such use and to notify the subscriber by SMS. A1 and Yettel have equivalent clauses. The practical line: a normal household with two heavy users streaming, working from home and gaming is fine. Mining cryptocurrency, running a webshop's SMS notifications, or attaching the SIM to a 4G router that backhauls a whole village's internet, are not.

Prepaid and tourist SIMs

Prepaid is the universal Bulgarian-SIM solution for tourists, short-stayers, remote workers on a trial visit, and anyone testing networks before signing a 24-month deal. It is also a real Bulgarian phone number, not a data-only travel eSIM.

The passport rule

Operator policy requires identity registration on every prepaid voice SIM. Practical guidance for British buyers:

• Take your passport even if you entered Bulgaria with another EU ID. UK passports are the standard accepted document.
• Use an official operator shop for first activation. Kiosks and supermarkets sometimes sell unactivated SIMs that won't work until registered.
• The Anti-Terrorism Act registration cap is 10 prepaid numbers per person.
• Data-only prepaid products (e.g. mobile-internet packs) have lighter registration than voice-number SIMs.
• If you need Bulgarian SMS OTP (bank apps, courier deliveries, doctor appointments), do not buy a data-only travel eSIM and assume it will work. You need a Bulgarian-number SIM.

A1 prepaid

From 1 January 2026, A1 sets a minimum top-up of 5 EUR / 9.78 BGN across all channels. Sources: A1 Prepaid ULTRA 5G, A1 Prepaid Mobile Internet 30 GB.

Yettel prepaid (Hello Plus)

Top-up tiers add their own bundle: e.g. 5.50-7.99 EUR top-up adds 600 BG/Yettel minutes + 15,000 MB BG + 6,500 MB EU roaming for 14 days. Top-up of 5.11 EUR or more extends SIM validity to 395 days and credit to 90. Source: Yettel Hello Plus.

Vivacom prepaid (Free2Go)

Free2Go is the most flexible of the three for short-stay data shoppers because the add-on packs let you buy exactly the duration you want.

Add-ons activate by USSD, SMS to 1236, or My Vivacom. Auto-renew if balance allows; cancel with SMS STOP <pack code> to 1236. Source: Vivacom Free2Go.

Best prepaid by stay length

eSIMs: local operators vs travel eSIMs

The single biggest source of confusion. A Bulgarian operator eSIM and a travel eSIM are not the same product, and the difference matters the moment your bank tries to send you an SMS code.

Local operator eSIMs (with a Bulgarian number)

All three operators sell eSIM products, but availability depends on the specific plan. The cleanest publicly-advertised eSIM products on 22 May 2026:

• A1 Prepaid ULTRA 5G: explicitly available as eSIM.
• A1 Prepaid Mobile Internet 30 GB: eSIM or physical SIM.
• Yettel prepaid + postpaid: eSIM is offered in-shop on most plans; ask explicitly.
• Vivacom prepaid + postpaid: eSIM available on most plans; ask explicitly.

Practical points before buying an operator eSIM:

• Postpaid eSIM activation typically requires in-shop ID verification as a foreigner, because the online identity check can fail on UK passports.
• Replacement eSIM QR codes may carry a small fee.
• Your phone must support eSIM and be unlocked. Many UK-network handsets are eSIM-capable; older budget phones are not.
• Dual SIM works: most modern phones run one physical SIM plus one eSIM, perfect for the Bulgarian-primary / UK-keep-alive setup.

Travel eSIMs for Bulgaria

The third-party eSIM market is excellent for short data needs. None of these products give you a Bulgarian phone number; treat them as wifi-in-your-pocket, not as a SIM.

Travel eSIM limitations to spell out

• Usually data-only. Some support inbound voice on the eSIM's foreign number, but not a Bulgarian one.
• Usually no Bulgarian number. Your Bulgarian bank, the courier, the doctor's receptionist cannot text you.
• Usually no Bulgarian SMS OTP. Even apps that allow international numbers may not send SMS to the eSIM provider's transit number.
• May route traffic through a transit country (Turkey, Spain), adding latency.
• May use only one of the three Bulgarian networks; if that network is weak at your address, you have no backup.
• Customer support is in-app, not in a Bulgarian shop.
• "Unlimited" eSIMs are not unlimited full-speed tethering.
• Some UK-locked phones cannot install a third-party eSIM until the network releases the lock.

The British dual-SIM playbook

The setup that works for most British residents:

1. Bulgarian SIM or operator eSIM as primary data and local calling line.
2. UK SIM or eSIM kept active for UK bank SMS, HMRC, NHS login, pension providers, GOV.UK One Login, family.
3. Turn off UK SIM mobile data roaming unless you know the per-day cost.
4. Enable Wi-Fi calling on the UK number before leaving the UK; you receive UK calls and SMS over your home wifi.
5. Do not port the UK number away or cancel the UK contract until every UK app on your phone has been tested with the new setup.

Roaming: Bulgaria, UK and EU

Three roaming scenarios cover almost every British expat. Each has a different legal regime, and the post-Brexit UK position is the one most people get wrong.

Bulgarian SIM, roaming in the EU

Bulgaria is in the EU "Roam Like at Home" zone. Your Bulgarian SIM works across the 27 EU member states and the EEA (Iceland, Liechtenstein, Norway) at domestic prices, subject to fair-use. Operators must send a roaming text on arrival in another EU country, reminding you of any fair-use limit. The EU rules say roaming is for travel, not permanent abroad use; spending more than ~4 months per year roaming outside Bulgaria can trigger a fair-use surcharge.

Bulgarian unlimited plans give a finite EU MB allowance (31,800 to 126,000 MB depending on plan; see Section 3). After that allowance is used, roaming continues but with a per-MB surcharge applied at the EU regulated rate.

Bulgarian SIM, roaming in the UK

Since Brexit, the UK is outside the EU "Roam Like at Home" regime. Some Bulgarian plans include UK-specific or wider non-EU MB; some do not. Current examples:

• Vivacom Unlimited (May 2026 promo): 2,000 / 6,000 / 12,000 MB non-EU bonus on Unlimited 20 / 200 / MAX, applicable to selected countries including the UK. Vivacom warns the list may change.
• A1 Prepaid ULTRA: standard minutes and MB valid in Bulgaria and EU/UK roaming; bonus MB are Bulgaria-only.
• A1 Unlimited Ultra: 400 minutes + 400 SMS + 4,000 MB for non-EU Zones 2/3/4 (check zone mapping for UK).
• Yettel: 12-month Total Unlimited plans focus on EU; UK is not specifically bundled. Check current 24-month gallery if UK travel matters.

Do not assume your Bulgarian SIM will roam in the UK the same way it does in Greece or Romania. Read the country list the week you travel; do not bank on this year's bonus being there next year.

UK SIM, roaming in Bulgaria

Bulgaria is still inside the EU, so EU rules pulled UK roaming charges down before Brexit. UK networks now set their own EU roaming rules. The 2026 position varies by provider:

Source: Ofcom "Pricing and consumer engagement trends in the UK communications sector" (February 2026) and individual provider terms pages.

Network quality and coverage

National award data is interesting; address-level testing decides. Coverage maps are not a substitute for buying a prepaid SIM and walking around your flat with it.

National benchmarks, January 2026

Opensignal's Bulgaria report for January 2026 covered the 1 October to 29 December 2025 window. Key findings:

Source: Opensignal Bulgaria January 2026. nPerf's 2025 Bulgaria mobile barometer also rates A1 the strongest national performer.

The pattern: A1 wins speed, Yettel wins reliability, Vivacom wins coverage. Translate into shopping advice:

• If you stream and download a lot, lean A1.
• If you make video calls and need the connection to stay up, lean Yettel.
• If you live somewhere awkward and just need a signal at all, lean Vivacom.

What this means for Shumen

In central Shumen city, all three are competitive on the main residential streets. Indoor performance varies by building age, wall thickness, floor, balcony orientation and the 5G/4G bands your phone supports. If you work from home, test at your desk, sofa, bedroom and balcony, on different days, before signing.

What this means for the villages

Coverage maps publish best-case outdoor predictions. The reality at the back of a stone-walled village house at 1730 on a winter evening can be one bar, no bars or "Emergency calls only". The rule:

Operator coverage maps

• A1 coverage map
• Yettel coverage map
• Vivacom coverage map

Contracts for expats

The 24-month Bulgarian mobile contract is a familiar shape for British shoppers, but the failure modes are slightly different. Indexation, post-promo pricing and device-finance balances trip more British expats than the legal small print.

Can foreigners get a Bulgarian contract?

Usually yes. Expect some combination of:

• Passport or national ID (UK passport accepted everywhere).
• Bulgarian address (rental agreement or residence-card address both work).
• Residence card or long-stay status if requested by compliance.
• EGN or LNCh if you have one; helps clear the credit check.
• Bulgarian bank card or account for direct-debit billing.
• Deposit if the operator's risk team treats you as new-to-country.
• In-store signing if the online identity check fails for foreigners (which it often does).

A tourist on a 30-day visit is not the target market for a 24-month plan; prepaid is the right answer. A new resident with a Bulgarian address, residence card and bank card is usually accepted without drama. Brand-new arrivals can be steered to "fewer months, smaller credit limit" plans by cautious shop staff; that is normal and fine.

12 vs 24 months

Both exist. Yettel publicly lists 12-month plans; Vivacom's current promo is 24-month; A1 device-checkout pages mostly show 24-month frames. The Bulgarian legal background:

• The Electronic Communications Act blocks automatic fixed-term renewal. When your contract reaches its end date and you have not signed a new one, it converts to indefinite term, same monthly price and can be terminated on one month's written notice without penalty.
• That removes the worst legacy trap but does not protect you from misunderstanding the end date, the post-promotional step-up, or the device-finance balance.

Early termination if you leave Bulgaria

If you break a fixed-term contract you may owe:

• Contract termination charges (often three monthly fees on a 24-month plan).
• Refund of any promotional discounts (the difference between the headline and the post-promo price, multiplied by months used).
• Remaining device-finance instalments in full, immediately.
• Unpaid bills and any bundled-service fees.
• Collection costs if you ignore the demand.

Price indexation

Bulgarian mobile-price indexation has a contested history. The Ombudsman publicly criticised years-long problems with mobile-service price increases and confirmed in 2024 that the Commission for Consumer Protection and the industry had agreed indexation clauses must be precise and reciprocal in the event of deflation. For you:

• Ask whether annual indexation is built into the contract.
• Ask if the promo price is fixed for the full term, or only the promotional window.
• Ask what happens in month 13 and month 25.
• Screenshot the offer page the day you sign.
• Insist on a printed contract summary, not just a glossy brochure.

Phone finance, slow down

Bulgarian operators sell handsets with cash discounts or leasing tied to higher plans. The numbers can look attractive, but:

• Compare the cash price in Bulgaria, the UK and EU online stores before signing finance.
• Calculate the full 24-month cost including the higher monthly plan fee.
• Check the handset is not locked to the operator.
• Check warranty route and language.
• Ask what happens to the device balance if you leave Bulgaria: it almost always becomes immediately payable.
• Do not finance a phone if you are not sure you will be in Bulgaria for the full 24 months.

Cancelling, porting and complaints

Bulgarian mobile complaints recur on a small number of predictable themes. Knowing the workflow before something breaks saves a fortnight of stress.

The Trustpilot picture

All three Bulgarian operators score low on Trustpilot, in the 1.3-1.4/5 range. That is normal for a telecom: happy customers don't review; angry ones do. The patterns repeat across A1, Yettel and Vivacom:

• Cancellation is harder than the buyer expected.
• Shop staff promises differ from the contract text.
• Extra digital services appear after signing.
• The post-promo price is misunderstood.
• Roaming outside the EU produces bill shock.
• The UK is misunderstood after Brexit.
• Device finance makes leaving expensive.
• English support is inconsistent.
• Apps or online payments fail.
• Rural/indoor coverage does not match the salesperson's promise.
• Customers leaving Bulgaria later receive debt/collection demands.

None of this means the operator is incompetent; it means the same eleven things go wrong everywhere. Knowing them in advance prevents most of them.

The complaint workflow

1. Check the contract, plan summary and latest invoice.
2. Contact the operator in writing (email, contact form, or signed letter). Get a reference number.
3. Ask for the complaint outcome in writing.
4. If unresolved within one month (Vivacom's published commitment; A1 and Yettel have similar windows), escalate to the Communications Regulation Commission or to the Commission for Consumer Protection (KZP).
5. For billing disputes, do not ignore invoices while arguing. Ask what minimum must be paid to avoid suspension, and pay that under protest; keep the difference in dispute.

Number portability

Bulgarian mobile-number portability is regulated and works. To port your Bulgarian number to another operator:

1. Sign the new contract at the new operator's shop and request a port (MNP).
2. Provide the donor operator's account number and your ID.
3. The donor operator typically has up to a few business days to release the number.
4. Your old number stops, the new SIM (or eSIM) activates with the same number.
5. Settle any final bill on the old contract; an unsettled balance can block the port.

The cancellation paperwork checklist

Keeping your UK number

For most British expats in Bulgaria, the UK number is more important than the Bulgarian deal. It is the SMS receiver for UK banks, HMRC, NHS login, pension providers and GOV.UK One Login. Lose it casually and you lose access to your own money.

Why the UK number matters

UK SIM uses you do not want to lose:

• Bank SMS one-time codes (most UK banks now allow app-based 2FA, but the SMS fallback still gets used).
• Card fraud calls from your UK bank's anti-fraud team.
• HMRC, particularly Self Assessment and tax-relief queries.
• NHS login, prescription orders, GP video consultations.
• Pension and SIPP providers; many will not accept a non-UK number on the customer record.
• GOV.UK One Login (the new shared identity layer).
• UK family WhatsApp continuity (less critical but a quality-of-life thing).
• Old two-factor authentication accounts that pre-date authenticator apps.

Best UK keep-alive providers

Port your UK number to a low-cost SIM before leaving the UK, then keep it active. The standard UK MVNOs that British expats use as keep-alives:

• giffgaff: EU roaming included with a fair-use balance; reasonable inactivity rules.
• SMARTY: usually competitive on data; EU roaming up to a 12 GB fair-use limit per 2026 deal coverage.
• 1pMobile: low base cost; suitable for pure keep-alive use.
• iD Mobile: occasional cheap unlimited deals on 24-month contracts.
• Tesco Mobile: reliable, especially if you want a UK-side relationship that doesn't churn.
• Lebara, Lyca: cheap, but check inactivity rules; some require regular paid use to keep the number alive.
• VOXI: data-rich young-person plans; check EU roaming policy.

The keep-alive routine

UK vs Bulgaria price comparison

"Mobile is cheaper in Bulgaria" is the lazy version. The honest version is "Bulgarian big-network unlimited plans are cheaper than UK big-network handset contracts, but UK MVNOs can match or beat Bulgarian prices on SIM-only deals". The right answer for you depends on what you actually need.

Like-for-like, unlimited SIM-only 200 Mbps tier, 2026

Sources: MoneySavingExpert (updated 7 May 2026), Uswitch (15 May 2026).

The honest verdict

MoneySavingExpert's own May 2026 reader poll found only 8% of UK users actually consume more than 10 GB a month. The unlimited-data debate is a marketing battle, not a behaviour battle. If you use 10-30 GB a month in Bulgaria and want a Bulgarian number, any 200 Mbps Bulgarian plan is fine and competitive. If you want the cheapest possible UK-roaming-from-the-UK SIM, a SMARTY 80 GB at £10/month is harder to beat. If you want the cheapest possible Bulgarian SIM that gives you a Bulgarian number, Vivacom Unlimited 20 with fixed service at 15.90 EUR is the headline.

For a UK expat, the real cost comparison is not Bulgarian plan vs UK plan. It is the combination: Bulgarian primary SIM (15-25 EUR) plus a UK keep-alive (£3-10/month). Together that is roughly 22-35 EUR a month, which is still cheaper than a single mid-tier UK big-network contract, and you get both a Bulgarian and a UK number simultaneously.

Mobile data as home internet

Sometimes mobile is the only realistic home internet option. Sometimes it is a bad workaround for not exploring fibre. Know which situation you are in before you sign anything.

When mobile home internet makes sense

• Fibre is genuinely unavailable at your address (rural villages, some old stone houses, isolated builds).
• You need a fail-over backup during fibre outages.
• You are renting short-term and don't want a 24-month fibre contract.
• Your village has strong 4G/5G coverage from at least one operator.
• You can mount a router near a window, on a chimney, or with an external antenna.

When mobile home internet is a bad idea

• Fibre is available; you just haven't checked. Vivacom and most regional ISPs cover most Bulgarian cities at gigabit prices that mobile cannot match.
• You plan to attach a phone SIM to a hotspot permanently; the fair-use rules will catch up with you.
• Your address has marginal coverage and you assume "5G fixes that". It usually doesn't.
• You need uploads for video calls; mobile upload speeds are usually 5-20% of download.
• Multiple heavy users in the household.

Dedicated 5G fixed-wireless products

All three operators sell a dedicated fixed-wireless product, separate from phone SIMs. These have their own router, their own SIM that may not transfer to a phone, and their own fair-use rules designed for stationary household use.

• Yettel 5G Home Internet: 24-month plans at 50, 100, 200 and 300 Mbps speed tiers; first-six-month promotional pricing.
• A1 Home Net 5G: similar speed tiers, similar contract structure.
• Vivacom: 5G fixed-wireless is the fallback where Vivacom fibre is unavailable.

For most Brits with fibre access, the answer is still fibre via the Internet, Mobile & Connectivity guide. For Brits in villages or old houses without fibre, a dedicated 5G home plan beats jury-rigging a phone SIM.

Best choice by scenario

Twelve common British-expat situations, with the single most actionable recommendation under each.

"I have just arrived and need data today"

Use a travel eSIM (Airalo, Saily, Nomad) if your phone supports eSIM and you only need data. Install before you fly. Use an operator-shop prepaid SIM only if you need a Bulgarian number from day one.

"I need a Bulgarian number for banks, couriers and doctors"

Buy local prepaid first. Passport, operator shop, 5-15 EUR. Move to postpaid only once you have tested coverage at your address and decided on a network.

"I live in central Shumen"

Start with A1 or Vivacom if speed is your priority. Test Yettel too if you make a lot of video calls. All three are competitive in central Shumen city.

"I live in a village near Shumen"

Test all three on prepaid first. Buy 5-15 EUR SIMs from each, test at your house for a week, then sign the postpaid that actually works. Do not sign based on national awards.

"I work from home on video calls"

Prioritise upload speed, latency, and indoor signal stability. Yettel's Reliability Experience win in Opensignal matters here more than headline download speed. A 20 Mbps plan is usually enough for video; the limiter is upload.

"I travel between Bulgaria and the UK"

Look for UK inclusion in non-EU bundles. Vivacom Unlimited (May 2026 promo) includes UK in its non-EU MB; A1 Prepaid ULTRA includes EU/UK roaming on standard MB. EU rules alone do not protect UK roaming after Brexit.

"I want the cheapest unlimited plan"

Vivacom Unlimited 20: 18.90 EUR/month without fixed service, 15.90 EUR with. Capped at 20 Mbps; 24-month commitment.

"I want the fastest mobile data"

Shortlist A1 Unlimited M/Ultra and Vivacom Unlimited MAX, then test at your address. Opensignal and nPerf both put A1 at the front nationally for speed; address-level performance still decides.

"I want the most reliable network for important calls"

Yettel, on the Opensignal Reliability Experience numbers. Speed is occasionally lower; "the call stays up" is more often.

"I am a heavy mobile internet user but want to avoid contracts"

A1 Prepaid Mobile Internet 30 GB or stack Vivacom Free2Go Data L+ add-ons. Both work with eSIM. No contract, no shop visit each month.

"I am moving permanently and want to keep my UK SIM"

Dual-SIM: Bulgarian primary (local operator, postpaid after testing), UK keep-alive (giffgaff, SMARTY, 1pMobile). Set up before you leave the UK; test every UK app before cancelling anything.

"I am a UK pensioner moving to a Bulgarian village"

Prepaid Vivacom Free2Go on a passport at the operator shop. Add an A1 prepaid as backup. UK number kept alive on giffgaff for the bank, NHS and pension providers. Defer any 24-month commitment until you have tested coverage and rate-of-use over winter, when village reception is at its weakest. See Pensions and Retiring to Bulgaria for the full pensioner-move picture.

Frequently asked questions

The questions Shumen.UK readers ask most about Bulgarian mobile phones, with sourced answers and anchor links back to the main text.

The bottom line

Three rules hold the whole Bulgarian mobile picture together for a British expat:

1. Prepaid first, postpaid only after on-site coverage testing. Buy 5-15 EUR prepaid SIMs from at least two operators and test them at your actual address. A 24-month contract signed before that test is a 24-month gamble.
2. Dual-SIM by default. Bulgarian primary for daily life and data; UK keep-alive on a cheap MVNO for banking 2FA, HMRC, NHS login and pension providers. Run a full 2FA dry-run before you cancel anything.
3. Read the post-promo price, not the headline. The 18.90 EUR Vivacom Unlimited 20 is what you pay this year; the post-promo step-up is what you pay next year. Ask in writing what the price is in month 13 and month 25, and screenshot the offer page on the day you sign.

And the meta-rule: the operator that wins national awards is not necessarily the operator that works in your house. Coverage is a Bulgarian-village problem at heart, and the only honest way to solve it is with a prepaid SIM in your pocket and an afternoon walking around your address.

Related guides: Internet, Mobile & Connectivity · Banking · Brexit & WA Rights · Residency · Moving to Bulgaria · Cost of Living · Pensions and Retiring to Bulgaria · Working in Bulgaria · All guides.