Monaco · roaming cost calculator
Monaco Roaming Price Audit: $120 on AT&T, $450.47 on an eSIM
HelloRoam is the top pick for Monaco on this site's rubric, though its 7-day unlimited plan there costs $331.35, at full speed for the first 2 GB a day, above the $84 a week on AT&T's $12-a-day pass, so for one week the day pass costs less, and Holafly ranks second on this site's rubric. HelloRoam refunds an unactivated eSIM for 180 days. Airalo covers 200+ destinations to HelloRoam's 185. HelloRoam's price is from its catalogue of 29 Oct 2026, rivals' from the 30 Oct 2026 price check; AT&T's rate was checked June 2026.
The Monaco audit below runs in dollars because the carrier bills in dollars. HelloRoam prices checkout in 31 currencies, so a $450.47 purchase can be paid without a dollar conversion.
Monaco eSIM plans: data allowances and prices
For a short trip to Monaco, HelloRoam's smallest fixed plan is $30.26 for 1 GB over 7 days, on a local network. One day of AT&T roaming costs $12.
Get eSIMHolafly sells unlimited daily data in Monaco. Remote workers and streamers avoid per-GB tracking on longer stays — one flat daily rate covers the whole trip.
Get eSIMNomad's Monaco plan runs on local infrastructure at $2.30/GB. The checkout flow takes under two minutes — no account required for first-time buyers.
Get eSIMMonaco Telecom covers major cities, motorways, and rail corridors in Monaco. Airalo sells into that market at $2.40/GB; rural dead zones affect both the eSIM and AT&T roaming equally.
Get eSIMMonaco Telecom is one of Monaco's 5G operators. At $2.60/GB, Saily's plan includes VPN protection that costs $13/month as a standalone NordVPN subscription.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Airalo vs HelloRoam · Holafly vs Saily · Holafly vs Nomad · Holafly vs HelloRoam · Saily vs Nomad · Saily vs HelloRoam · Nomad vs HelloRoam
The full picture
Monaco roaming: AT&T vs Verizon vs T-Mobile rates
Every major carrier's published Monaco rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| EE | EU Daily Charge | £2.72source | £16.50 | LTE | Fair-use |
| AT&T | International Day Pass | $12.00source | $84.00 | LTE | Plan data |
| Verizon | TravelPass | $12.00source | $84.00 | LTE | Plan data |
| eSIM · HelloRoam | 20GB data plan | — | $450.47 | 5G | 20GB |
Compare all carrier roaming plans to see how AT&T, Verizon, T-Mobile, Vodafone, and EE stack up against eSIM providers.
Pay-per-use cost audit
What AT&T charges per activity in Monaco — no day pass
One day in Monaco without an international plan: typical phone use runs roughly 450 MB. At AT&T's $2.05/MB pay-per-use rate, that day costs $922. Breakdown: 1 hour of navigation ($102), 30 minutes of Zoom ($922), uploading 20 photos ($410), light social media. One day with a Monaco eSIM on a local network: roughly $4.32 when you spread the plan cost across your trip. AT&T's International Day Pass is $12/day and avoids pay-per-use entirely — but even that costs more than most eSIM plans cover for the same period. Source: AT&T rate card, June 2026.
Personalize your savings
Your Monaco saving against $12 a day
Adjust the trip length, the carrier and the daily data below and the calculator reprices both sides. The starting point is the 10-day average stay recorded for Monaco: $120 on an AT&T day pass at $12 a day, against $450.47 for a 20GB travel eSIM. Both prices buy access to the same local operators.
Network coverage
4G and 5G network reach across Monaco
Monaco has one mobile operator: Monaco Telecom. AT&T, Verizon, and travel eSIM providers all route through a local network. There is no network variable to compare — only price. AT&T: $12/day. eSIM: $22.52/GB. The network connection is the same. The price is not. 5G coverage is available on Monaco Telecom in Monaco's main cities. Carrier roaming and eSIMs connect to 5G equally in those areas. Paying AT&T's $12/day roaming rate buys no additional access to those 5G towers.
Network attachment record
The networks behind both prices in Monaco
HelloRoam publishes one local operator for Monaco: Monaco Telecom.
One operator means no fallback network.
Where Monaco Telecom has no signal, an eSIM has nowhere else to attach.
HelloRoam records a 5G label against Monaco Telecom.
Carrier roaming meets the same ceiling, because roaming rents local networks.
Price is what separates the two options in Monaco. This page prices both.
5G and 4G here are capability labels. Neither one is a speed reading.
Monaco Telecom carry the eSIM in Monaco. Across the whole file HelloRoam names 154 operators over 185 destinations, 117 of them with a single operator and 1.48 on average. Roaming buys wholesale access to that same list.
| Operator | Network generation on file |
|---|---|
| Monaco Telecom | 5G |
Source: HelloRoam package feed, read 17 August 2026. The feed publishes an operator list for every destination it sells. No speed test sits behind this table, and we ran none. The full operator map covers 185 destinations.
Pricing breakdown
Monaco eSIM vs roaming pricing comparison
AT&T International Day Pass in Monaco: 10 daily fees × $12 (AT&T's cap per bill cycle) = $120. eSIM 10GB plan on a local network: $225.20 for the same 14 days. Difference: $-105.20 less than AT&T (-88%). Verizon TravelPass reaches $168 over the same period.
Daily data cost comparison for Monaco: AT&T $12/day, Verizon $12/day, T-Mobile high-speed $10/day, eSIM $16.09/day ($225.20 total over 14 days). On a per-day basis, the eSIM is 0.7x cheaper than AT&T.
AT&T charges $120 for 14 days regardless of how much data you use. eSIM tiers let you pay for what you need: 1GB at $30.26 ($30.26/GB), 3GB at $85.74 ($28.58/GB), 5GB at $134.48 ($26.90/GB), 10GB at $245.43 ($24.54/GB), 20GB at $450.47 ($22.52/GB). For unlimited data, the daily plan costs $43.03/day ($602.45 total), which is $482.45 more than AT&T at $12 a day.
The unlimited ladder for Monaco reads 1 day at $53.79, 3 days at $153.30, 7 days at $331.35, 14 days at $602.45, 30 days at $1097.32. Unlimited here means 2GB a day at full speed before a fair-use policy applies. At 30 days the rate is $36.58 a day. Catalogue prices read 29 Oct 2026.
Trip cost breakdown
What Monaco costs across three common trip types
If you visit Monaco for 3 days and need 2GB for maps and messaging: AT&T charges $36 ($12/day x 3 days). A 3GB eSIM on a local network costs $85.74. You save $-49.74.
If you visit for 14 days with 15GB of photos and video calls: AT&T reaches $120 per line, at most 10 daily fees each bill cycle. A 20GB eSIM on a local network covers the same stay for $450.47 — $-330.47 less, a -275% reduction.
If you stay 30 days and need 50GB for video calls and streaming: AT&T totals $120 over the month, its cap of 10 daily fees in one bill cycle. A 50GB eSIM on a local network costs $1126.07. You save $-1006.07 (-838%). Rates checked June 2026.
Airport options
First-day data options in Monaco
Buying a SIM card at the airport in Monaco means waiting in line after a long flight, handing over your passport, and paying a tourist-markup price. A 1GB eSIM at $30.26 installs in 2 minutes from the provider's app. It activates on a local network the moment you turn off airplane mode.
Data planning
Planning your data usage in Monaco
At 1.5 GB per day, you use roughly 96 MB per waking hour in Monaco. That is maps, messaging, email, and light social media. A 20GB plan at $450.47 gives you 11GB for 7 days.
The 20GB plan at $450.47 gives you roughly 20 hours of video streaming, or 256 hours of social media browsing. AT&T charges $84 for the same 7 days on the same local network. For heavy data users, a 1-day unlimited plan costs $53.79, not under AT&T's $12/day pass.
Connectivity
Trusting public WiFi in Monaco: risks and alternatives
WiFi infrastructure in Monaco is concentrated in luxury hotels and a few urban areas. Outside those zones, an eSIM on a local network is often the only reliable data source at $22.52/GB.
Plan your data
Estimating data for a trip to Monaco
Verizon TravelPass bills $12/day for Monaco roaming. Across a 10-day trip that reaches $120 in roaming charges alone. An eSIM on a local network delivers the same 5G data for $450.47 — -275% less.
Monaco has one mobile operator: Monaco Telecom. US carriers pay Monaco Telecom for roaming access and pass that cost to you at $12/day. An eSIM connects to Monaco Telecom directly at $22.52/GB — no carrier markup.
Local prices in Monaco are in EUR (€), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
Monaco Travel Essentials
112/17/18/15
112, 17, 18, 15 are the emergency numbers in Monaco. Different numbers may route to different services — save all of them before your trip. Emergency calls work from any mobile device, including travel eSIMs.
Type C/E/F
Monaco uses Type C outlets (European two round-prong). US plugs require a Type C adapter. Check that your phone and laptop chargers show 100-240V input — most modern chargers are compatible.
CET/CEST (UTC+1/+2)
EUR (€)
Cash in EUR is preferred across most of Monaco outside major hotels and tourist centers. Card terminals are not common in local markets or small restaurants. Withdraw enough cash at a reliable ATM before leaving the city — rural areas may not have ATM access.
Quick tip
Monaco uses EUR (€). eSIM plans charge in USD at the time of purchase — you lock in the cost before travel and avoid in-country exchange rate moves.
Good to know
Monaco uses Type C/E/F power sockets. A dead phone means a dead eSIM connection — pack the right adapter to keep your device charged between venues.
Step by step
Monaco eSIM installation guide
- Verify eSIM compatibility — any iPhone from 2018 or Samsung Galaxy S20 and later works on Monaco's 5G network via Monaco Telecom
- Go to HelloRoam, select the Monaco 1GB plan at $30.26, and complete checkout — no physical SIM needed. Not sure which provider to pick? See our provider comparison.
- On iPhone: go to Settings > Cellular > Add eSIM > Use QR Code and scan the HelloRoam code before you leave home so it is ready to activate on arrival
- On Samsung Galaxy: go to Settings > Connections > Mobile Networks, select your home carrier SIM, and turn off Data Roaming. The step-by-step roaming guide has Android screenshots.
- On Google Pixel when you land in Monaco: go to Settings > Network > SIMs and set the HelloRoam eSIM as the preferred data SIM — 5G on Monaco Telecom confirms in seconds
- First-timer tip: set up WiFi Calling before your trip, not at the airport — some carriers require a verification step that needs a home network connection to complete
Data tips
Data-saving tips for Monaco
Messaging app data usage: WhatsApp text messages under 1 KB each, WhatsApp voice calls 30 MB/hour, WhatsApp video calls 250 MB/hour. Google Translate's offline language packs download once over WiFi and use no cellular data during translation. Download the Monaco language pack before you board.
Regional context
Monaco mobile data: Europe regional patterns
A few things to know before turning off carrier roaming in Monaco:
Only one carrier
Among most expensive data globally
French networks bleed across border
Nearby
Related destinations
6 destinations near Monaco are priced on the same rate card. AT&T bills $12 a day in every one of them, and the figure beside each flag is that destination's own per-gigabyte floor. The cheapest of the group is Austria at $0.74 a gigabyte.
Forgot your eSIM?
Last-minute eSIM options for Monaco arrivals
You landed in Monaco without an eSIM. Here is what that costs and what you can still do.
All 5 providers — HelloRoam, Holafly, Nomad, Airalo, and Saily — allow post-arrival purchase and installation over WiFi. You do not need a local SIM to buy an eSIM. Most international airports in Monaco have free WiFi in arrivals. Connect there, open a provider's app, and install a 1GB plan ($30.26 in this site's catalog) before you leave the terminal. If airport WiFi is unavailable, hotel lobby WiFi works as a fallback — most front desks in Monaco give you the password at check-in. Last resort: turn on carrier data long enough to download the eSIM provider app (~5 MB, roughly $10 on AT&T pay-per-use), then switch to the installed eSIM immediately. That charge lands once, unlike AT&T's $12/day pass, which bills again every day of the trip.
Savings math
How much you save in Monaco
Solo traveler
Break-even point for a solo Monaco trip: day one. AT&T charges $12 for the first 24 hours. A 20GB eSIM at $450.47 is already cheaper than two AT&T days. By day 10, the eSIM has saved $0 total. There is no trip length at which AT&T roaming costs less than a travel eSIM for Monaco.
Family trip
Verizon TravelPass charges per line, not per account. A family of four pays $48/day ($12 x 4 lines). Over 10 days in Monaco: $480. Four eSIMs at $450.47 each: $1801.88. Per-person savings: $-330.47. All eight data connections (4 carrier, 4 eSIM) route through local 5G towers.
AT&T roaming rate analysis
Checking voicemail on AT&T in Monaco is treated as an inbound international call. That call starts a $12 Day Pass fee covering the next 24 hours, even if you did not plan to use data. A single voicemail check at 5 AM on your last morning adds $12 to your bill. Weekly AT&T cost: $84. Monthly: $120. A 20GB eSIM: $450.47 for 10 days on a local network. The eSIM does not charge for background triggers.
All-carrier summary
AT&T: AT&T International Day Pass costs -73% more than an eSIM for Monaco.
Verizon: Verizon TravelPass costs less than this eSIM plan for Monaco.
T-Mobile: T-Mobile's International Passes cost less than this eSIM plan for Monaco.
EE: EE bills Monaco in pounds and this site holds no pound-to-dollar rate, so it states no EE-versus-eSIM gap. EE rates from its roaming checker, October 2026.
Against AT&T: $0 saved (0%). Against Verizon: $0 saved. Against T-Mobile's International Pass at $10/day: $0 saved. Against T-Mobile free tier: $0 carrier cost, but the throttle renders maps, ride-hailing, and video calls unusable. A 20GB eSIM at $450.47 delivers full 5G on a local network for less than any paid roaming option.
Quick answers
Common questions about Monaco data costs
Is eSIM cheaper than roaming in Monaco?
Carrier roaming in Monaco costs $120 on AT&T ($12/day for 10 days). An eSIM plan on a local network costs $450.47 for 20GB. Both connect to the same 5G cell towers. The eSIM is cheaper by $0, a 0% reduction. Rates checked June 2026.
How much does roaming cost in Monaco?
Without an international plan, AT&T charges $2,099 per gigabyte in Monaco. The International Day Pass reduces this to $12/day ($120 for 10 days). Verizon TravelPass charges $12/day. An eSIM on a local network: $450.47. Rates checked June 2026.
Does T-Mobile work in Monaco?
T-Mobile works in Monaco on its included allowance: Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. For 10 days of high-speed data, the cheapest pass mix is $50 (10-day pass). A Monaco Telecom eSIM delivers full 5G speed for $450.47. Rates checked June 2026.
AT&T fine print for Monaco
$12 covers 24 hours from the first time your phone uses a foreign network, and a single background push notification at 2 AM can start it. AT&T bills at most 10 daily fees per line each bill cycle (terms read 31 Oct 2026).
iCloud Photos, email push, app updates all trigger the daily charge. A phone left in a bag with data roaming on starts a new $12 fee each time a sync lands after the last 24 hours ran out.
Monaco FAQ
Monaco eSIM & roaming questions
Monaco carrier roaming costs $12 a day on AT&T and on Verizon
AT&T bills $12 a day for the first line and $6 for each extra line, so a family of four in Monaco pays $30 a day, or $210 across a week. Verizon charges the full $12 on each line. T-Mobile's Experience plans include 5GB or 15GB of high-speed data abroad per line, then at a reduced speed. Travel eSIM plans are per device and do not share, so four phones means four plans from $30.26 for 1GB each, or one plan tethered to the rest. Holafly caps hotspot use at 1 GB per day on most plans, so a family leaning on tethering should buy fixed data instead. Rates checked June 2026.
T-Mobile's included data in Monaco runs at high speed until the allowance ends
Only until the allowance runs out. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. At 256Kbps text messaging works and maps slow down. T-Mobile's 1 Day International Pass costs $10 for 2GB, and its 10-day pass $50 for 15GB. Five eSIM providers deliver full 5G on a local network instead, from $22.52/GB. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Monaco roaming bills by the day, not by the gigabyte
At 3 days in Monaco: AT&T costs $36, eSIM costs 1GB for $30.26. At 7 days: AT&T $84, eSIM same 1GB for $30.26. At 14 days: AT&T $120, eSIM same fixed rate. The eSIM billing model is flat: the longer the trip, the wider the gap. T-Mobile's included data costs nothing extra until its 5GB or 15GB allowance runs out, then runs at up to 256Kbps.
Carrier roaming beats an eSIM in Monaco on one-day stops and voice-only trips
Three cases, and they are real. First, T-Mobile does not charge for data in Mexico and Canada up to its plan's high-speed allowance, and nothing priced here beats free. Second, if you need your own number live for calls and texts without WiFi, a day pass does that and a data-only travel eSIM does not. Third, if you use almost no data, one AT&T day at $12 can beat buying a whole plan for a single overnight stop. Outside those three the arithmetic favors the eSIM in Monaco: $84 for a week on AT&T against $236.46 at $22.52/GB on Monaco Telecom. Rates checked June 2026.
An Apple Watch in Monaco rides the iPhone's connection, not its own plan
Apple Watch Series 4 and later support eSIM, but international travel eSIM providers do not sell standalone Apple Watch plans. The Apple Watch in Monaco connects via your iPhone's hotspot — it mirrors the iPhone's data connection. Your iPhone must have an active plan (carrier roaming at $12/day or a travel eSIM at $22.52/GB on Monaco Telecom) for the Watch to function away from WiFi. Apple Watch Cellular uses your watch's built-in eSIM only on your home carrier — AT&T and Verizon charge per watch line at the same daily roaming rate in Monaco. Rates checked June 2026.
EU roaming caps cover EU contracts, not US carriers in Monaco
Because the rule binds European operators, not American ones. "Roam like at home" caps what a European carrier may charge its own subscribers inside the bloc. AT&T, Verizon, and T-Mobile sell US plans, so nothing in Monaco obliges them to follow it. They apply their standard international rates instead: AT&T and Verizon $12 per 24 hours, and T-Mobile 5GB or 15GB of high-speed data on its Experience plans, then up to 256Kbps. A travel eSIM skips the policy question by buying local capacity directly at $22.52/GB on a local 5G network. UK travelers should read their own tariff: Vodafone and EE include EU destinations on most plans, though not on all of them. Rates checked June 2026.
AT&T's $12 day pass against a Monaco eSIM plan price
No. AT&T International Day Pass costs $12/day in all European countries including Monaco. Over 7 days that is $84. A 5GB eSIM plan costs $134.48 for the same period on Monaco Telecom. The eSIM saves -60% and does not charge you on days when you only use WiFi — unlike the day pass, which triggers the moment any cellular data is used.
One plan can carry a Schengen route through Monaco
Pick on coverage count first, price second. A regional Europe plan puts the whole route under one data bucket, so crossing a border costs nothing extra. Airalo and Holafly each list 200+ destinations and Nomad lists 200. Airalo's 5 GB plan works out at $2.40/GB on the 30 Oct 2026 medians. HelloRoam covers 185 at $2.01/GB, the lowest median 5 GB rate here; Nomad runs $2.30/GB. Holafly sells unlimited only, at a 7-day median of $27.50, across 200+ destinations, level with Airalo. AT&T and Verizon charge $12/day in every Schengen country alike, so four countries over two weeks through Monaco still bills $120. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
GDPR governs what a travel eSIM records about a Monaco trip
GDPR governs how companies process personal data, not how your phone uses mobile data. A travel eSIM in Monaco connects to a local network — the same infrastructure AT&T and Verizon route roaming through. GDPR does not change connection speeds, pricing, or data limits. Both carrier roaming and travel eSIMs log metadata (connection times, data volumes) as part of standard carrier operations. GDPR applies to the provider's handling of that log data, not to your browsing or usage.
A week of Monaco carrier roaming costs $84
AT&T: $84/week (International Day Pass at $12/day). Verizon: $84/week (TravelPass). T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $50 for a week of passes (10-day pass). The cheapest eSIM for Monaco starts at $22.52/GB on a local 5G network — better per-GB value than all three carriers.
Fact check
eSIM and roaming misconceptions for Monaco travelers
T-Mobile includes free international data
T-Mobile's Experience plans include 5GB or 15GB of high-speed data abroad, then up to 256Kbps, too slow to load a map tile in Monaco past the allowance. Its 1 Day International Pass costs $10. Exception: T-Mobile does not charge for calls, texts or data in Mexico and Canada; depending on the plan, up to 30GB is at high speed, then up to 256Kbps. Monaco is not on that list. Rates checked June 2026.
Carrier roaming is more reliable than an eSIM
Reliability is determined by the local carrier's network, not the billing layer above it. AT&T roaming in Monaco routes through a local network. A travel eSIM also routes through a local network. Both connections depend on local network coverage in any given area. AT&T charges $12/day for a connection with zero reliability advantage over the $30.26 eSIM.
Pay-per-use international data rates are reasonable
AT&T's pay-per-use international data rate is $2.05/MB without an active plan. At that rate, 1 GB costs $2,099. A single Google Maps navigation session in Monaco loads 50–100 MB — that is $102–$205 at pay-per-use. A 1GB eSIM on a local network costs $30.26 for the same data. Always activate a day pass or eSIM before your flight. Rates checked June 2026.
Our recommendation
Roaming vs eSIM in Monaco: what the data shows
Our pick for Monaco: HelloRoam. HelloRoam covers Monaco on a local network and scores 9.9/10 on our rubric, the highest of the 5 providers we price. A 1GB plan costs $30.26. Unactivated plans are refundable for 180 days, and its support replies in your own language. Holafly is the alternative for heavy data users: it states no daily cap, at a 7-day unlimited median of $27.50 on 30 Oct 2026.
Learn more
Travel guides, Monaco
4 guides carry the parts of a Monaco trip this page does not price: installing the profile before departure, switching data roaming off on the home SIM, and what happens to the allowance once a fair-use policy applies. Each one reads the same rate card as this page, where AT&T bills $12 a day.
Compare Monaco eSIM plans vs carrier roaming rates
You do not need a new carrier plan for Monaco. Buy an eSIM, scan the QR code, and your phone is online for $450.47.
Get a Monaco eSIM