Internet in Singapore for tourists: the options, and which one fits your trip

Why a European plan gets expensive in Singapore

The EU's Your Europe portal sets out where roaming without surcharges applies: EU countries, the EEA members Iceland, Liechtenstein and Norway, and also Moldova and Ukraine. Other countries are not part of the regime, although many operators extend their offers to some of them, and the portal warns that roaming outside the EU and EEA, especially for data, can be expensive. Singapore is one of those other countries, so your operator charges whatever its own rates for Singapore are, unless you buy a specific add-on from it.

Your Europe's advice is to check those prices with your provider before you travel. If you are not going to use your home line for data, the simplest protection is to switch off roaming on it before landing at Changi, so the phone cannot run up charges in the background; the steps are in the guide on turning off roaming on your home line. Calls and texts to your own number can still reach you if you leave the line on for those.

The three ways to get online, side by side

• Travel eSIM: a data plan installed in your own phone from a QR code, ideally at home on Wi-Fi. It needs a phone that takes eSIMs and is not locked to a carrier, and your usual SIM stays in place.
• Tourist SIM: Changi Airport says prepaid SIM cards are sold at the Changi Recommends booth or at money changers in any terminal. You register it with your passport, it replaces your home SIM in its slot, and a passport registration only lasts 30 days.
• Free Wi-Fi: #WiFi@Changi at the airport and Wireless@SG in public places across the city. Both are free, but you depend on being near a hotspot, so it works as a backup rather than as your way around the city.

To check an eSIM first: Apple says eSIM works on the iPhone XS, XS Max and XR or later, and that the phone must not be locked to a carrier. You can see it in Settings, General, About: next to Carrier Lock it should read No SIM Restrictions. Google says a Pixel 3a or later can use a physical SIM and an eSIM at the same time. The list of compatible phones covers other models, and the guide on how to install an eSIM walks through the QR code step by step.

A tourist SIM at Changi: the registration rules

In Singapore a SIM is not just bought, it is registered. Singtel's page for collecting its hi!Tourist SIM says registration is compulsory, that you must bring your original passport, that the person registering must be at least 15 and that the SIM is activated when you collect it. Changi Airport appears among its collection points. The same page explains that since 15 July 2024, under IMDA's regulations, a SIM registered with a passport is valid for 30 days from registration; after that it is suspended without notice and without a refund, unless you re-register it with a Singapore-issued ID or work pass.

M1 says the same in its prepaid FAQ: SIMs registered with a foreign passport expire automatically after 30 days, service ends on day 31, and the number cannot be kept beyond that. Each ID can register up to three prepaid or tourist SIMs with calls and SMS, whatever the operator. For a trip of under a month that is rarely a problem, but it means a tourist SIM is a short-stay product by design. And with a physical card your home SIM comes out of the phone; a travel eSIM sits next to it instead, as explained in the guide to dual SIM travel setup.

Free Wi-Fi: Changi and Wireless@SG

Changi Airport's own page describes #WiFi@Changi as free in both the public and transit areas of all terminals, from the arrival and departure halls to the gates, lounges and shops. You do not need an account, an email address or a phone number: you pick the #WiFi@Changi network, open a browser, type any website address and press Connect Now on the page that appears. That is enough to send a message on landing or check the route to your hotel before you leave the terminal.

In the city, the public network is Wireless@SG. StarHub, one of its operators, describes it as free wireless internet in public places across Singapore, with speeds from 5 Mbps. Foreign visitors log in through a web browser with their mobile number: you type it in, and a one-time PIN is sent to that number, so your home line has to be able to receive texts in Singapore. IMDA, the regulator that runs the programme, says that since March 2025 you no longer need an app: you set up a Wireless@SGx profile on its web portal, verifying your mobile number, and IMDA publishes a downloadable list of hotspots.

Mobile coverage on the MRT

Singapore's regulator measures this itself. Under IMDA's 4G quality-of-service framework, mobile operators must reach coverage above 99 % in all road and MRT tunnels, and IMDA checks it with surveys that use mobile phones. In its results for July to September 2025, the North South, East West, Changi Airport, Circle, North East and Thomson-East Coast lines passed for all four operators. The Downtown Line failed for all of them that quarter, and IMDA notes that the operators are working on improving it.

In practice, that means mobile data usually keeps working underground, which matters because a route search often happens on the platform. IMDA also points out that each person's experience can vary with the handset, its settings and how many people are around. From the airport, Changi's page says the train leaves from Changi Airport MRT station towards Tanah Merah, where you change to the East West Line, or towards Expo, where you change to the Downtown Line. If you are also crossing into Malaysia, the guide on mobile data in Kuala Lumpur covers that side.

The SG Arrival Card and the apps you will use

Before you land, there is a form to fill in. Singapore's Immigration and Checkpoints Authority (ICA) says all travellers must submit the SG Arrival Card, with its electronic health declaration, within three days before arrival, counting the day you arrive. It is done online, through the SGAC e-Service or the MyICA Mobile app, and it is free; ICA warns that it does not endorse any company charging a fee to submit it for you. Travellers who transit through Singapore without clearing immigration do not need it. Do it at home on Wi-Fi, so you are not filling it in on arrival.

For getting from A to B, Changi lists Grab, Gojek, Zig, Tada, Ryde and Geolah as ride-hailing providers, booked through their apps, with pick-up points in the arrival areas of Terminals 1 to 4. All of those need data at the moment you book and while you wait for the car. Maps too: Google's help page says that offline, transit, bicycling and walking directions are unavailable, so the downloaded map is only a backup. WhatsApp keeps your usual number on a data eSIM, as the guide on keeping your WhatsApp number explains.

A stopover or a full stay: the Singapore eSIM

Many people only see Singapore between two flights. If you stay airside, #WiFi@Changi covers the transit areas and you do not need an arrival card. If you leave the airport for a few hours or a night, the airport Wi-Fi stays behind and you need your own data for ride-hailing, maps and messages. The guide on mobile data on a layover covers when an eSIM is worth it for a stopover and how to combine it with the one for your final destination.

Snoozim's Singapore plans come in 3, 5, 10 and 20 GB; the 3 GB one lasts 15 days and the others 30. They connect to M1 and Singtel, both on 5G, and the phone picks whichever has the better signal. The plan starts counting at the first connection in Singapore, not when you buy it, you can top it up without reinstalling, the hotspot is included and it carries data only, with no Singapore number. It works on Sentosa, which is part of Singapore, but not in Johor Bahru or on Batam and Bintan: those trips need a Malaysia eSIM or an Indonesia eSIM. To size the plan, the data calculator turns your habits into a number.