What Are the Best SIM-Only Plans for Cross-Border Travels Between Singapore and Malaysia?

Updated on 01 Dec 2025

Commuting between Singapore and Malaysia is part of daily life for many, from office-goers crossing for work, weekend shoppers in Johor Bahru, to leisure travellers enjoying a quick getaway. Whether you’re hopping over to explore the latest F&B spots or travelling for business, reliable mobile connectivity and data roaming have become essential.

Buying a local SIM in Malaysia can be a hassle, and certain plans with international data roaming often come with exorbitant fees. SIM-only data plans that include both Singapore and Malaysia roaming provide a convenient, cost-effective solution without the extra complexity.

This guide will help you navigate the options and identify the top 5G SIM-only plans with international roaming for Singapore and Malaysia commuters, whether you’re a light day-tripper or a heavy cross-border commuter, so you can stay connected without breaking the bank

How does a SIM-Only Plan Work?

A SIM-only plan is a mobile subscription that excludes a bundled device. You pay solely for mobile services, local data, roaming, talk time, and SMS, which results in lower monthly fees than contract plans. It also saves the hassle of switching SIM cards every time you cross the border, making it ideal for frequent Singapore–Malaysia travellers. You retain full freedom to use your existing phone or purchase a device of your choice.

SIM-only plans come in two main types:

• Prepaid: You top up as needed, ideal for occasional users and light travellers.

• Postpaid: Billed monthly, suited for regular users with predictable usage patterns.

Why travellers and everyday users prefer SIM-only plans:

• Flexibility: Most plans have no long-term lock-in, so you can upgrade, downgrade, or cancel without penalties.

• Number Portability: Keep your Singapore number even when switching carriers, perfect for cross-border commuting.

• Digital-First Setup: Purchase online, activate via eSIM in minutes, and manage your plan entirely through apps or portals.

• 5G Connectivity: Many SIM-only plans now include 5G, ensuring fast speeds and smooth streaming, navigation, and hotspot use while travelling.

Which is the Best SIM-Only Plan with Data Roaming in Malaysia for Me?

The best SIM-only plan for cross-border travel depends on how frequently you move between Singapore and Malaysia, the amount of roaming data you need, and the capabilities of your device.

Occasional travellers may only require light roaming for maps and messaging, while daily commuters or heavy users need larger allowances for streaming, navigation, or hotspot use.

Device compatibility is another factor: phones that support eSIM allow instant activation and make switching between different SIMs and carriers seamless, which is particularly handy when crossing the border regularly.

Finally, consider whether you need unlimited local data or hotspot functionality, as these requirements will influence which plan tier is most suitable for your lifestyle.

What Are MVNOs?

A Mobile Virtual Network Operator (MVNO) is a provider that leases network infrastructure from Singapore’s major telcos, Singtel, StarHub, and M1, but offers its own SIM-only plans.

MVNOs often provide competitive pricing, flexible plan options, and tailored packages that can be ideal for travellers or those seeking cost-effective alternatives without sacrificing connectivity. Many MVNOs also include features like roaming data, eSIM support, or add-on perks

Which is the Most Affordable SIM-Only Mobile Plan for Roaming in Singapore & Malaysia?

If your goal is cost-efficiency, you’ll want the lowest monthly fee that still offers acceptable local data in Singapore and some roaming support in Malaysia. Here are some tips:

• Seek plans with basic local data, minimal roaming, and low monthly bills.
• Be cautious of promotional pricing; once the promo ends, your cost may increase.
• If you rarely travel across the border, you may avoid hefty roaming bundles and simply top up when you do.

To help you compare, here are some of the most affordable SIM-only plans which come with roaming data for Singapore and Malaysia

*Note: The $7.90/cycle promotional pricing applies for the first 12 cycles. Pricing will be reverted to $9.90 from the 13th cycle onwards. Each cycle lasts 30 days.

All these plans run on 4G and offer different combinations of SG–MY data, talktime, and SMS. Zym Flexi Duo is the cheapest at $7/month but provides data only, with no talktime or SMS.

Maxx, at $7.90/month, offers a balanced SIM-only plan with data roaming in Malaysia: 290 GB combined SG–MY data, 500 minutes talktime, 99 SMS, making it a strong choice for travellers who want connectivity, cost-effectiveness, and flexibility.

Maxx Plans (with eSIM/Physical SIM and Roaming Data)

For travellers regularly crossing between Singapore and Malaysia, having a mobile plan with roaming built in is essential, and this is where Maxx truly stands out. Unlike many providers that treat roaming as an optional add-on, Maxx includes SG–MY roaming data across multiple tiers, giving you the flexibility to choose a plan that fits your lifestyle.

Maxx plans also include 5G access, offering high-speed browsing, streaming, and hotspot usage where available. Across all plans, you can monitor your data usage in real time via the Maxx app.

Here’s a quick overview of Maxx’s SIM-only 4G and 5G plans for commuting between Malaysia and Singapore, including SG-MY data-roaming, speed, and talktime.

SIM-Only Plans by Singtel vs StarHub vs M1

Full-service telcos like Singtel, StarHub, and M1 generally have higher SIM-only prices than MVNOs, but they offer reliable coverage, consistent speeds, and built-in roaming, making them a strong choice for frequent cross-border travellers. Extras like loyalty rewards, bundled subscriptions, and priority support can add value for those who prioritise convenience and service quality.

To help you compare, the table below outlines key factors such as price, local and Malaysian roaming data, and speed policies.

SIM-Only Plans with Malaysia Roaming by Other Providers

MVNOs (Mobile Virtual Network Operators) and smaller providers in Singapore offer SIM-only plans that can be particularly attractive for travellers between Singapore and Malaysia. Because they lease network infrastructure, MVNOs can often offer lower prices, more flexible plans, and niche features tailored to specific user needs. 

For cross-border travellers, this can mean affordable roaming data options or pay-as-you-go add-ons that avoid the higher costs of full-service telcos.

When choosing a SIM-only plan from an MVNO, it’s important to consider a few key factors. 

• Roaming Data: Check the amount of Malaysia roaming data included and whether it supports your typical usage, such as maps, streaming, or hotspot tethering.

• eSIM Support: Verify if the plan offers eSIM activation for quick, hassle-free switching between different SIMs across borders.

• 5G & Speed Management: Review whether 5G is available and the network speed provided.

• Fair-Use Rules: Ensure the plan’s fair-use limits won’t cause throttling or unexpected charges while travelling.

To make comparison easier, the table below highlights some of the top MVNO SIM-only plans for travellers between Singapore and Malaysia, showing local data, roaming allowances, and speed options.

How to Choose the Right SIM-Only Plan When Travelling between Singapore and Malaysia

Choosing the right SIM-only plan means finding one that fits your unique travel habits, data needs, and device setup. Here’s a checklist to help you decide.

• Do you travel across the SG–MY borders weekly or daily?

• Do you stream video, work remotely, or hotspot while in Malaysia?

• Does the plan include MY roaming without causing bill shock?

• Does your phone support eSIM for easier cross-border switching?

• Do you need 5G access for faster browsing, streaming, or gaming while travelling?

Answering these questions will help you narrow down the plans that match your travel habits, data needs, and device capabilities, ensuring seamless connectivity across Singapore and Malaysia.

Best SIM-Only Plan for Light Data Users travelling between SG/MY

If you travel across the Singapore–Malaysia border only occasionally, keeping your data usage under 50 GB per month, cost-efficiency becomes a key factor. Prioritising a plan that balances low monthly fees with essential roaming data ensures you stay connected without overspending

Here are the top 5G SIM-only plans with international roaming for light data users travelling from Singapore to Malaysia.

Best SIM-only Plan for Moderate Data Users travelling between SG/MY SG/MY

For weekly travellers or those who regularly stream, browse, or work in Malaysia, a plan with 100-400 GB of roaming data per month is ideal to ensure uninterrupted connectivity.

Here’s a table of the best 5G data plans for the Malaysia to Singapore commute for moderate data users.

Best SIM-only Plan for Heavy Data Users in SG/MY

For daily cross-border commuters or travellers who rely on mobile tethering and hotspot usage, plans offering more than 400 GB of roaming data per month provide the capacity and speed needed for seamless connectivity.’

Here’s a table of the best 5G data plans for cross-border travel between Singapore and Malaysia for heavy data users.

Final Thoughts on Finding the Right Cross-Border Mobile Plan

For travellers between Singapore and Malaysia, a reliable SIM-only plan isn’t just convenient, it’s essential. Whether you’re navigating streets, making digital payments, streaming content, or tethering your device as a hotspot, seamless data roaming keeps you connected every step of the way.

This is where Maxx’s SG–MY roaming bundles shine. By putting data front and centre, they offer reliable connectivity, real-time usage control, and the flexibility to travel on your terms. With plans like these, staying connected across borders has never been simpler or more stress-free.

View all of Maxx’s SIM-only plans today and find the perfect SG–MY roaming option to stay connected wherever your travels take you.