eSIM for Singapore

Singapore is small, fast, and ruthlessly well-designed. You can eat your way through a hawker centre, take the MRT to the beach, and watch the Marina Bay light show - all in one day. The city is extremely connected (free Wi-Fi is widespread), but your own data makes ride-hailing with Grab, queue-jumping apps, and real-time restaurant bookings much smoother.

How to install your Singapore eSIM in 3 steps

Changi Airport's arrival halls are efficient, but there's still no reason to queue at a telco counter when you can be online the moment you clear the gate. Here's how it works.

1. Buy your Singapore plan before you fly. You'll get a QR code and setup instructions by email within minutes of ordering, so there's nothing to pick up on arrival.
2. Install it on Wi-Fi while you still have internet. The eSIM installation step itself needs a data connection, so do this before you leave home, not after landing at Changi with no signal. iPhone: Settings > Cellular > Add eSIM, then scan the code. Android: Settings > SIM Manager > Add eSIM, then scan the code.
3. Activate on arrival in Singapore. Once you land at Changi (Terminal 1 through 4), turn on data roaming for the eSIM line specifically. You should pick up a Singtel, StarHub, or M1 signal within the arrivals hall itself, with no passport check and no queue at a SIM counter.

Mobile network coverage in Singapore

Four operators serve the island: Singtel, StarHub, M1, and Simba. Because Singapore is a compact city-state, none of them have the large rural dead zones you'd find in bigger countries, but the four still perform differently once you compare them district by district.

Marina Bay, Orchard Road, and the business districts

Singtel is the widest of the four, with strong 4G across essentially the whole island and a 5G-SA footprint that covers most of the built-up area, including median speeds that tend to run faster than the other three around Marina Bay and the Central Business District. StarHub is close behind with reliable outdoor 5G along the length of Orchard Road's shopping stretch, and M1 also holds up well across the city core. Simba, the newest entrant, runs on thinner 5G spectrum and can feel patchier once you're indoors in Orchard's malls or Marina Bay Sands' lower floors.

Sentosa, Pulau Ubin, and the outer islands

Sentosa's beaches, theme parks, and water parks are well covered on all four networks, since it's a short hop from the mainland. Pulau Ubin, the rustic island off Singapore's northeast coast, is a different story: coverage there is noticeably thinner than anywhere else in the country, and it's one of the few spots on the map where you should expect to lose signal for stretches while cycling the trails.

Getting around: the MRT and ferry crossings

Singapore's underground MRT network carries a usable 4G and 5G signal through most tunnel sections, so you can keep navigating or messaging on the commute rather than losing signal every time the train dips below ground. Ferries out to Pulau Ubin or across to Indonesia's Batam and Bintan islands are the exception: once you're mid-strait, expect the connection to fade until you're back near land.

How much data do you need for your trip to Singapore?

How much data you'll burn through depends on whether you're mostly navigating between Marina Bay Sands and Gardens by the Bay or streaming and posting the whole way through Sentosa.

Usage style	Daily estimate	1-week trip	Good fit
Light (maps, messaging, occasional browsing)	~300 MB	2-3 GB	See light-data plans
Moderate (social media, some streaming, navigation)	~750 MB	~5 GB	See mid-tier plans
Heavy (video streaming, hotspot use, heavy uploads)	1.5 GB+	10-20 GB	See large-data plans

If a day trip to Pulau Ubin or a ferry crossing to Batam is on your itinerary, download offline maps beforehand; the data table above assumes steady coverage, and those legs are where Singapore's otherwise near-universal signal thins out.

eSIM vs. roaming vs. a local SIM in Singapore

All three get you connected on arrival, but the cost and the paperwork differ enough to matter, especially given Singapore's local SIM registration rules.

	Travel eSIM	Home-carrier roaming	Local SIM
Typical cost	Plans from £0.61	Often £7-£19 per day or week depending on your home carrier's plan	Around £7-£15 at Changi Airport, a carrier shop, or a convenience store
Setup	Buy online, install before you fly, activate on arrival	Often automatic, sometimes needs a roaming pass enabled first	In-person purchase at Changi's arrivals hall, a Singtel/StarHub/M1 shop, or a 7-Eleven-style store
Keep your number	Yes, your home SIM stays in for calls and texts	Yes	No, you get a new Singapore number
ID/passport needed	No physical ID check	No	Yes: original passport only, no photocopies, and a passport-registered prepaid SIM is only valid for 30 days before it needs re-registering. No IMEI registration is required either way, unlike most other Asian destinations.

A local SIM can still make sense for a very long stay or a work assignment, since it gets you a genuine Singapore number, but that 30-day expiry means anyone here for a month or more will need to re-register partway through; for a standard visit, an eSIM installed before departure skips the counter and the countdown clock entirely.

Tips for staying connected in Singapore

• Install your eSIM on Wi-Fi before you leave home; the setup step itself needs an internet connection you won't have on landing at Changi.
• Singtel is the safest all-round pick if your trip covers a lot of ground, with StarHub and M1 close behind in the city center; Simba is thinner on 5G spectrum, so expect more variance indoors on that network.
• Heading to Pulau Ubin or taking a ferry to Batam or Bintan? Download offline maps first, since that's where Singapore's otherwise near-universal coverage genuinely thins out.
• Save Singapore's emergency numbers before you land: 995 for ambulance and fire, 999 for police. Non-emergency ambulance requests go through 1777 and carry a charge of around £148, so reserve 995 for genuine emergencies.
• If you also want a physical local SIM as backup, bring your original passport (no photocopies), and remember that a passport-registered prepaid SIM in Singapore is only valid for 30 days before you'd need to re-register it.
• Unlike most Asian countries, Singapore doesn't require IMEI device registration for tourists, so there's no extra paperwork step before your eSIM or local SIM starts working.
• Continuing on through the rest of Southeast Asia? See our Asia regional eSIM for one plan across multiple countries.

Traveling beyond Singapore?

Plenty of Singapore trips continue over the Causeway or by a short flight. If yours does, check out our eSIM for Malaysia for a run up to Johor Bahru, Kuala Lumpur, or Penang, our eSIM for Indonesia for a ferry over to Batam, Bintan, or on to Bali, our eSIM for Thailand for Bangkok or Phuket, our eSIM for Vietnam for Ho Chi Minh City or Hanoi, our eSIM for the Philippines for Manila or Cebu, or our eSIM for Hong Kong if that's your next stop north.