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Zym Roaming: Coverage, plans, and pricing
Learn how Zym Mobile’s SIM-only postpaid plans and roaming add-ons keep you connected across 80+ destinations, with 4G/5G coverage and no contract.
Zym roaming helps Singapore-based travellers stay connected across Asia and beyond, with a mix of base plans, regional roaming packs, and low-cost IDD options. Built on Singtel’s network, Zym Mobile offers postpaid flexibility and app-based management, making it easy to stay in control of your usage abroad.
In this guide, we cover everything you need to know about Zym roaming: which countries are included, how much it costs, how to activate it, and how it compares to unlimited travel eSIM alternatives like Holafly.
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What is Zym roaming?
Zym roaming allows you to stay connected while travelling outside Singapore, with coverage available in over 80 destinations. Plans range from $5 for short-term single-country packs to $40 for global options.
Operated by Zym, a contract-free Mobile Virtual Network Operator (MVNO) on the Singtel network, these roaming services are accessible via the ZYM Mobile app.
Some postpaid plans include limited free roaming data, while others require purchasing add-ons for regional or global travel. All options support 4G and 5G, with flat-rate pricing and seamless app-based activation.
Zym roaming countries
Roaming with Zym is available in flexible tiers, from single-country packs to global coverage across 81 destinations. Depending on the plan, Zym roaming countries span both nearby destinations in Asia and major travel hubs worldwide, making it easy to get coverage for your trip.
Some popular supported locations include:
- Zym roaming in Malaysia
- Zym roaming in China
- Zym roaming in Asia
Here’s a full breakdown of Zym mobile coverage by roaming tier:
| Roaming Plan | Destinations Covered |
|---|---|
| ZYM Single Country | 3 countries: Malaysia, Thailand, and Indonesia* |
| ZYM Travel Asia‑9 | 9 destinations: Australia, Brunei, Cambodia, Indonesia, Laos, Malaysia, New Zealand, Philippines, Thailand |
| ZYM Travel Asia‑18 | 18 destinations: Includes all countries from the Asia-9 plan plus China, Hong Kong, India, Japan, Macau, Myanmar, South Korea, Taiwan, Vietnam |
| ZYM Travel Global‑81 | 81 destinations: Includes all Asia‑18 countries above plus Albania, Argentina, Austria, Bangladesh, Belgium, Brazil, Canada, Chile, Colombia, Czech Republic, Denmark, Egypt, Estonia, Finland, France, Georgia, Germany, Greece, Hungary, Iceland, Ireland, Israel, Italy, Kazakhstan, Kuwait, Latvia, Lithuania, Luxembourg, Malta, Mexico, Moldova, Netherlands, New Caledonia, Norway, Pakistan, Peru, Poland, Portugal, Qatar, Romania, Russia, Saudi Arabia, Serbia, Slovakia, Slovenia, South Africa, Spain, Sweden, Switzerland, Tajikistan, Turkey, UAE, UK, Ukraine, USA, Uzbekistan and more |
* Note: The ZYM Single Country plan lets you choose one destination at purchase (e.g. “ZYM Single Country – Malaysia”). There is no switching allowed mid-plan.
Zym Roaming: Plans and prices
ZYM offers a range of SIM-only postpaid plans that include monthly roaming allowances for popular travel destinations in Asia-Pacific. Depending on the tier, these plans also come with generous one-time data bonuses valid for up to a year. All prices are in Singapore dollars.
| Plan Name | Roaming Data | Long-Term Bonus Data | Covered Roaming Destinations | Price & Validity |
|---|---|---|---|---|
| Roam SAVER (4G) | 3GB shared/month | 100GB for Malaysia (valid for 365 days) | 6 destinations: Malaysia, Indonesia, Thailand, Taiwan, Philippines, India | $7.77 / month |
| Roam PLUS (4G) | 5GB shared/month | 600GB for Malaysia & Indonesia (valid for 365 days) | 13 destinations: Malaysia, Indonesia, Thailand, Japan, South Korea, Taiwan, Australia, China, Hong Kong, Macau, Philippines, Vietnam, India | $10.10 / month |
| Roam SMART (4G) | 15GB shared/month | 600GB for Malaysia, Indonesia & Thailand (365 days) | 13 destinations: Malaysia, Indonesia, Thailand, Japan, South Korea, Taiwan, Australia, China, Hong Kong, Macau, Philippines, Vietnam, India | $15.10 / month |
| Roam ECO (5G) | 5GB shared*/month | 600GB for Malaysia & Indonesia (valid for 365 days) | 13 destinations: Malaysia, Indonesia, Thailand, Japan, South Korea, Taiwan, Australia, China, Hong Kong, Macau, Philippines, Vietnam, India | $17.10 / month |
| Roam POWER (5G) | 15GB shared*/month | 600GB for Malaysia, Indonesia & Thailand (365 days) | 13 destinations: Malaysia, Indonesia, Thailand, Japan, South Korea, Taiwan, Australia, China, Hong Kong, Macau, Philippines, Vietnam, India | $22.10 / month |
| Flexi DUO (4G) | 77GB/month | 100GB Malaysia data (valid for 90 days) | 2 destinations: Singapore, Malaysia | $7.00 / month |
Notes:
- “Shared” data refers to usage across included destinations.
- Free monthly roaming applies only to the listed destinations. Once monthly or bonus roaming data is used up, you must purchase a roaming add-on to stay connected abroad.
Roaming Add-ons
If your plan doesn’t include enough roaming data or you’re travelling to destinations outside your plan’s coverage, you can purchase ZYM roaming add-ons directly through the app. These are contract-free and activate instantly.
For single-country trips, you can choose a roaming pack tailored to Malaysia, Thailand, or Indonesia:
| Countries | Data Allowance | Validity | Price |
|---|---|---|---|
| Malaysia | 3GB | 7 days | $5.00 |
| 8GB | 30 days | $6.50 | |
| 30GB | 30 days | $16.00 | |
| Thailand | 3GB | 7 days | $5.00 |
| Indonesia | 3GB | 7 days | $5.00 |
For multi-country coverage, ZYM also offers regional and global add-ons across several destinations:
| Plan | Data Allowance | Validity | Price |
|---|---|---|---|
| Travel Asia 9 | 4GB | 30 days | $12.00 |
| Travel Asia 18 | 6GB | 30 days | $18.00 |
| Travel Global 81 | 8GB | 30 days | $40.00 |
Note: Research how much data you’ll need for travel beforehand, and purchase a roaming pack that matches your destination and duration.
How to activate Zym roaming
Activating Zym roaming is simple and managed entirely through the ZYM Mobile app. Whether you’re topping up for a single country or a global trip, you can do it in just a few taps. To activate Zym roaming:
- Download the ZYM Mobile App from the App Store or Google Play.
- Open the app and navigate to the Plan or Add-on section to browse roaming options.
- Choose your roaming destination, options include ZYM Single Country, Travel Asia 9, Travel Asia 18, or Global 81.
- Review the plan details, such as data allowance and validity period, to ensure it fits your trip.
- Purchase your plan directly in-app with instant payment and activation.
- Enable roaming on your phone by turning on data roaming in your device settings before you travel.
Note: ZYM automatically blocks roaming unless you have an active roaming plan to avoid unexpected roaming charges.
How to avoid high Zym roaming charges
Roaming with Zym is cost-effective, especially since it blocks usage once your plan runs out. However, it’s still smart to manage your data wisely to prevent hitting your cap mid-trip. Here’s how:
- Monitor your data usage regularly in the ZYM Mobile app.
- Disable background data and automatic app updates to reduce passive usage.
- Connect to Wi-Fi networks whenever possible for streaming or large downloads.
- Turn on Airplane Mode when you’re not using your phone.
- Purchase the correct roaming add-on, such as ZYM Travel Asia 9, before your trip or top up as needed.
- Consider switching to an unlimited data eSIM like Holafly to enjoy predictable, flat-rate roaming without the risk of surprise charges.
By managing your usage proactively, you can stretch your Zym roaming data further, avoiding mid-trip disruptions and saving money that could go towards more travel experiences, not top-ups.
Holafly eSIM: An alternative to Zym roaming
Zym’s roaming add-ons are handy for short regional trips to places like Malaysia or Indonesia. But with data caps of just 3GB for $5 or 8GB for $18, it’s easy to burn through your allowance, especially with data-heavy apps like video calls, maps, or even scrolling through social media reels.
Once your data runs out, roaming stops entirely, with no pay-as-you-go fallback or automatic top-up. This makes it a bit inconvenient, as you’ll need to monitor your remaining data closely to avoid sudden disconnection mid-trip.
For more flexibility, Holafly Plans offer a simpler solution:
- Unlimited data in 200+ destinations
- Transparent pricing with no surprise fees
- 24/7 customer support
- Instant activation via QR code
- Supports hotspot/tethering
For longer stays or multi-country travel, Holafly Plans start at $8/day or $51/month with auto-renew, making them a smarter, stress-free alternative to managing multiple top-ups.
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Disclaimer: The data in this article is accurate as of July 21, 2025, and is subject to change.
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Formerly a travel journalist turned marketing copywriter, I found my way back to the travel world with Holafly—my dream company that made remote work possible. My motto? “Dream big and make it happen.” I’m passionate about writing, exploring the world, and staying active through walking, running, swimming, and hiking. I also love learning, reflecting, and connecting with inspiring minds.
