eSIM for Singapore and Malaysia: one plan or two, and what each costs
Mobile data prices for Singapore and Malaysia, when a combined eSIM beats two country plans, crossing the Causeway without roaming charges, and coverage from Kuala Lumpur to Borneo.
· 7 min read
A travel eSIM covers Singapore and Malaysia without a tourist SIM card from either: you install it at home and switch it on when you land at Changi or KLIA. Both countries have fast, dense networks in the cities, 5G is widely available, and data is cheap. Cabin Mode sells plans for each country separately and a combined plan covering both plus Thailand; which one is better depends on how your days split between them.
What Singapore and Malaysia data costs
Singapore
| Data | Valid for | Price (USD) | Per GB |
|---|---|---|---|
| 1 GB | 7 days | $1.10 | $1.10 |
| 3 GB | 15 days | $2.90 | $0.97 |
| 5 GB | 30 days | $4.82 | $0.96 |
| 10 GB | 30 days | $9.40 | $0.94 |
| 20 GB | 30 days | $16.40 | $0.82 |
Malaysia
| Data | Valid for | Price (USD) | Per GB |
|---|---|---|---|
| 1 GB | 7 days | $1.40 | $1.40 |
| 3 GB | 15 days | $3.40 | $1.13 |
| 5 GB | 30 days | $5.40 | $1.08 |
| 10 GB | 30 days | $9.40 | $0.94 |
| 20 GB | 30 days | $16.40 | $0.82 |
| 50 GB | 30 days | $34.00 | $0.68 |
Singapore, Malaysia and Thailand on one eSIM
| Data | Valid for | Price (USD) | Per GB |
|---|---|---|---|
| 3 GB | 15 days | $5.60 | $1.87 |
| 5 GB | 30 days | $8.80 | $1.76 |
| 10 GB | 30 days | $15.20 | $1.52 |
| 20 GB | 30 days | $25.80 | $1.29 |
Prices checked 25 September 2026; the app shows current prices in your currency. See Singapore plans, Malaysia plans and the Singapore, Malaysia and Thailand plan.
There's also a Singapore and Malaysia plan sold as day passes, 1 GB a day for $1.98, which suits a short trip that crosses back and forth. See it here.
One plan or two?
The arithmetic is simple enough to do before you buy.
- Four days in Singapore, ten in Malaysia: a 3 GB Singapore plan ($2.90) plus a 10 GB Malaysia plan ($9.40) is $12.30 for 13 GB. The combined plan's 10 GB is $15.20.
- Going back and forth across the Causeway, or adding Thailand: the combined plan is simpler, since the same data works in all three countries and there's nothing to switch.
- A two-day Singapore stopover on a longer Malaysia trip: a 1 GB Singapore plan and a Malaysia plan. You can hold both eSIMs on your iPhone and switch the data line in Settings.
Country plans are cheaper per GB. Regional plans save thinking. Both are fine.
How much data you'll need
Both countries have excellent public wifi in malls, hotels and cafés, and Singapore's MRT has signal in the tunnels. A typical visitor uses around 1 GB a day between maps, Grab, messaging and social media.
- One week: 5 GB
- Two weeks: 10 GB
- Working remotely, or streaming on long bus rides: 20 GB or more
There's no unlimited data plan for either country in the catalog right now; the 50 GB Malaysia plan is the heavy-use option. How much data do I need for a trip has the per-app figures.
Coverage
Singapore is small and almost completely covered, with 5G across most of the island, including the MRT, Sentosa and the airport. Coverage isn't a question here.
Peninsular Malaysia is well covered in and around Kuala Lumpur, Penang, Melaka, Ipoh and Johor Bahru, and along the North–South Expressway. It gets patchier:
- in the Cameron Highlands tea valleys and on jungle trails
- in Taman Negara, where there's little signal beyond the park headquarters and Kuala Tahan
- on the Perhentian and Tioman islands, which have signal around the main beaches and not much beyond
Malaysian Borneo (Sabah and Sarawak) has good coverage in Kota Kinabalu, Sandakan and Kuching, and gaps in the interior, on river wildlife trips along the Kinabatangan and on the upper slopes of Mount Kinabalu. Download offline maps before you leave the city.
The plans support 5G where the partner network has it, which in Malaysia means the major cities and in Singapore means nearly everywhere.
Crossing the Causeway
If you're going between Singapore and Johor Bahru by bus, car or the RTS Link when it opens, the most common surprise is a roaming bill from your home carrier. Phones near the border switch to Malaysian networks without asking, sometimes while you're still in Singapore.
A multi-country eSIM avoids that: the same data works on both sides. If you're using two country plans, switch the data line when you cross. Either way, keep data roaming off on your home line.
Local tourist SIMs
Both countries require registration for local prepaid SIM cards:
- Singapore: passport registration at the point of sale, with passport-registered prepaid lines valid for 30 days.
- Malaysia: since February 2026, your original passport (and visa, if you needed one), recorded at the counter, with a limit on how many prepaid SIMs a visitor can register per operator.
These take a few minutes at the airport and give you a local number. A travel eSIM skips them, and your home SIM stays in the phone for calls and texts. The general comparison is in travel eSIM vs roaming vs a local SIM.
Do you need a local number?
Not usually. Cabin Mode is data only, with no phone number, and:
- Grab works in both countries with an international number. Register at home so the one-time code reaches your home SIM.
- WhatsApp and iMessage keep working on your usual number, because they're tied to your account.
- Transit: Singapore's MRT and buses take contactless bank cards and Apple Pay at the gates. In Kuala Lumpur, a Touch 'n Go card works on the LRT, MRT and buses.
Some local e-wallets and delivery apps prefer a local number. For a holiday, that's rarely a problem.
Arriving at Changi or KLIA
Install the eSIM on home wifi first, following how to install an eSIM on iPhone. On landing:
- Set mobile data to the Cabin Mode line in Settings › Cellular (Mobile Service in some regions).
- Turn data roaming on for that line only.
- Leave data roaming off for your home line.
Most plans start on first connection in the country, not when you install, so it's fine to install a few days ahead. The plan screen says which.
Adding Thailand or going further
The combined Singapore, Malaysia and Thailand plan covers the classic overland route north from Singapore through Kuala Lumpur and Penang into southern Thailand. For Vietnam, Indonesia, Cambodia and beyond, see the Southeast Asia backpacking eSIM guide and the Thailand eSIM guide.
If you run low anywhere along the way, a top-up adds data to the same eSIM without reinstalling. Usage in the app lags one to three hours, so top up with some margin.
Frequently asked questions
Can I use one eSIM for Singapore and Malaysia?
Yes. The Singapore, Malaysia and Thailand plan covers all three on one eSIM, and a Singapore and Malaysia day-pass plan covers the two. Country plans are cheaper per GB if most of your time is in one of them.
Will my eSIM work in Johor Bahru?
A Malaysia plan or a multi-country plan will. A Singapore-only plan won't work once your phone connects to a Malaysian network, and your home SIM may start roaming if data roaming is on for it.
Is 5 GB enough for a week in Singapore?
Yes, for most people. Singapore has wifi almost everywhere and a week of maps, Grab and social media usually comes in under 5 GB.
Does my eSIM work on Singapore's MRT?
Yes. Singapore's MRT has mobile coverage in stations and tunnels.
Do I need a Malaysian SIM card for Grab?
No. Grab accepts international numbers in Malaysia. Set up your account before you leave home so the verification code arrives reliably.
Is there mobile signal in Borneo?
In Kota Kinabalu, Sandakan and Kuching, yes. In the interior, on Kinabatangan river trips and on Mount Kinabalu there are long gaps, so download what you need before leaving town.