On Sint Maarten a local prepaid SIM is cheap, sold in dollars, and quick to buy, which leaves the travel eSIM a narrow job. Telem, the government-owned company behind the TelCell network, sells its SIM for 20 dollars with 10 dollars of credit already on it, and 7.5 GB for a week costs 10 of those dollars. Airalo's Dutch-side eSIM, the only one sold, asks 30 dollars for 5 GB over the same seven days. What complicates the arithmetic is the island's shape. Half of it is France, the border is a road sign, and a Dutch-side number is a +1 721 number that pays international rates to reach +590 phones in Marigot or Grand Case. Choosing a SIM here is really choosing which half of the island you will live in.
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Two Dutch-Side Networks and Five French Ones
Sint Maarten covers about 34 square kilometres, less than half the island, and it is served by two mobile operators. TelCell belongs to the TelEm Group, owned by the Sint Maarten government, which rebranded its consumer business as Telem. You will see both names on the same shopfront, and the prepaid SIM is still sold as a TelCell SIM. Flow is part of Liberty Latin America and grew out of UTS, whose prepaid mobile line still carries the Chippie name. Digicel, the default second network on most Caribbean islands, has no Dutch-side licence here, which surprises visitors coming from Curacao or Jamaica.
The French side is a different market entirely: Orange Caraibe, SFR Caraibe, Digicel, Dauphin Telecom and Flow's French-side business sell lines numbered under +590, priced in euros, and governed by French and EU rules.
| Operator | Side | What a visitor should know |
|---|---|---|
| TelCell (Telem) | Dutch | Widest Dutch-side footprint; the network Airalo resells; data plans via *1721# |
| Flow (Chippie) | Both | Bundles sold as usable anywhere in Saint Martin, plus Chippieland roaming to Curacao and Bonaire |
| Orange, SFR, Digicel, Dauphin | French | +590 numbers in euros; EU roaming applies for EU SIMs |
For a traveller the key line in that table is the middle one. Flow is the only operator selling a home network on both sides of the border, which matters more than any price difference if you are staying near Oyster Pond or commuting daily to Marigot.
Telem and Chippie Prices, Set Against the eSIM
Prices on the Dutch side are published in US dollars, so nothing needs converting. The Caribbean guilder, which replaced the Antillean guilder in March 2025 at a peg of 1.79 to the dollar, exists on the receipts but almost never on a phone plan.
| Option | Price | What you get |
|---|---|---|
| TelCell SIM (Telem) | $20 | The line plus $10 of credit, valid 60 days from the last top-up |
| Telem prepaid data | $2 | 2.5 GB, one day |
| Telem prepaid data | $6 | 6 GB, three days |
| Telem prepaid data | $10 | 7.5 GB, seven days |
| Telem Always On | $0.10 per 20 MB | Pay-as-you-go data from credit when no plan is active |
| Flow Chippie data, 7 days | $12 | Island-wide bundle; confirm the allowance in store |
| Flow Chippie data, 30 days large | $24 | 8 GB, usable on both sides and in Chippieland |
| Airalo Sint Maarten eSIM | $30 | 5 GB, seven days, TelCell, data only |
| Airalo Sint Maarten eSIM | $31 | 5 GB, fifteen days, TelCell, data only |
A note on the Chippie numbers
The Chippie bundle list comes from a Flow page for the island that still carries old UTS styling, and its allowance column is not clearly laid out. We are confident of the prices, 2.50 for a day, 6 for three days, 12 for seven, 18 and 24 for the two thirty-day sizes, and less confident of the exact gigabytes. Ask at the counter, and check that your phone supports LTE band 3, the band Chippie lists for 4G.
The Telem week at 10 dollars for 7.5 GB is the benchmark. Against it Airalo costs three times as much for two thirds of the data, which is the plain reason the local SIM wins for anyone staying more than a couple of days.
The Border Problem: One Island, Two Phone Systems
Walking from Cole Bay to Marigot takes you past a welcome sign and nothing else, but your SIM is doing paperwork the whole way. Three things change when you cross.
The network
A TelCell SIM keeps working near the border, but deeper into the French side it attaches to a French partner network and roams. Telem's roaming page states that local data plans do not apply while roaming, and its published data rate for every listed destination is 10 cents per MB, so a 7.5 GB bundle is worthless in Grand Case.
The dialling
Dutch-side numbers are +1 721, French-side numbers are +590. Calling a Marigot beach bar from a TelCell line is an international call, and the reverse is true for a French SIM calling a Simpson Bay restaurant.
The rules
An EU SIM roams like at home in Saint-Martin and pays rest-of-world rates in Sint Maarten, because only the French half is EU territory. The island hopping guide explains the EU and non-EU split across the Caribbean in more detail.
The practical rule is simple. If you will spend more than an occasional evening on the French side, either buy a Flow Chippie line, which is sold for use anywhere in Saint Martin, or pair a TelCell SIM with a travel eSIM whose coverage lists French Saint-Martin, and switch lines when you cross the lagoon bridge.
Where to Buy, From the Airport to Front Street
Three places cover almost every visitor. The arrivals area at Princess Juliana International is the first, and a local hotel's August 2026 arrival guide reports TelCell and Chippie kiosks selling prepaid data there, which matches what travellers describe. Airport kiosk hours follow the flight wave rather than the clock, so a late arrival may find them shut.
The second is Philipsburg, where Telem and Flow both keep branches and where a cruise passenger can reach a phone shop on foot from the pier in about fifteen minutes along the Great Bay boardwalk. Telem also sells through a reseller network of supermarkets and convenience stores, and credit can be added online at telcelltopup.com or by card at any reseller, in amounts from 1 to 200 dollars.
The third is Cole Bay and the Simpson Bay strip, where Flow has a store and the large supermarkets sell top-up cards.
What to bring
Take your passport. Telem requires ID for postpaid and branches routinely ask for it on prepaid, and resellers may simply decline to activate a line without it. After activation, set the APN if data does not start: Telem uses telem in every APN field, and Chippie bundles require the APN premium. Send NUMBER to 121 on a TelCell line to learn your own number.
How Credit, Bundles and Expiry Work on TelCell
Telem's prepaid system has two layers, and knowing them avoids a surprise halfway through a trip. The first layer is core credit: the 10 dollars that comes with the SIM and whatever you add. It stays valid for 60 days from the last top-up of any size, followed by a seven-day grace period in which incoming calls and texts still work. The second layer is the data plan you buy from that credit through *1721#, which has its own fixed validity and ends with a text message telling you the expiry date.
When a plan runs out, Always On Data takes over by default and charges 10 cents per 20 MB from core credit, which is about 5 dollars a gigabyte. That is a safety net rather than a bargain, and it will quietly consume the credit you were saving for the next bundle. Text AO OFF to 1000 to stop it, or AO ON to turn it back on.
Why the TelCell system suits visitors
Where it catches people out
Which One Fits Your Trip
The choice on this island turns less on price than on how your days are spread across the border, so match the option to the itinerary.
| Trip | Best choice | Why |
|---|---|---|
| Cruise day in Philipsburg | Airalo 1 GB, 3 days, $8 | No shop visit needed, working the moment you step onto the pier |
| Week in Simpson Bay or Maho | TelCell SIM plus $10 bundle | About $20 in total for 7.5 GB |
| Villa near Oyster Pond or Terres Basses | Flow Chippie | One home network on both sides of the border |
| Split stay, Dutch and French | eSIM listing both halves | Avoids roaming whenever the phone changes country |
| Island hop to St Barths or Anguilla | Separate plan per island | No local Sint Maarten product reaches either |
For a cruise passenger or a two-night stopover, the eSIM is worth its premium because the alternative is spending port time in a queue. For anyone staying a week, the Telem counter pays for itself on the first day. If you need both, keep the eSIM for the taxi ride out of the airport and pick up a SIM the next morning. Multi-island travellers can compare regional packs in our Caribbean island hopping eSIM guide.
Frequently Asked Questions
Is Digicel available on the Dutch side?
Not as a local network. Digicel operates on the French side, and a Digicel SIM from Jamaica or Curacao will roam onto it there, but the Dutch side is served by TelCell and Flow only. Airalo's Sint Maarten eSIM rides TelCell. If a friend tells you to buy Digicel in Philipsburg, they are thinking of another island.
Which Dutch-side SIM keeps working after I cross into Marigot?
A Flow Chippie line, whose data bundles are sold as usable anywhere in Saint Martin because Flow holds licences on both sides. A TelCell line roams once it attaches to a French network, where Telem's local bundles do not apply and data is charged from credit at Telem's roaming rate, 10 cents per MB on its published table. If you are staying on the French side most of the time, a French-side SIM from Orange or SFR in Marigot is the other sensible option.
Can I just use the 10 dollars of credit that comes with the TelCell SIM?
Yes, and that is the neat part of the deal. The 20 dollar SIM includes 10 dollars of credit, which is exactly the price of the 7.5 GB seven-day bundle, so the whole first week costs 20 dollars. Dial *1721# to choose the plan. If you leave the credit unused, Always On Data will spend it at 10 cents per 20 MB instead.
Do I need to register a local SIM with ID?
Bring your passport. Telem publishes an ID requirement for postpaid and branches ask for identification on prepaid too. We could not find a published Sint Maarten regulation mandating prepaid registration, so practice may vary between a branch and a corner reseller, but turning up without ID is the easiest way to leave empty-handed.
Is the guilder or the dollar used for phone top-ups?
The dollar. Telem's prepaid plans, SIM price and roaming rates are all quoted in US dollars, and resellers accept dollars without question. The Caribbean guilder, introduced in March 2025 at 1.79 per dollar, is legal tender and you may receive change in it, so spend small notes before you leave the island because it is not easy to exchange at home.