Asia eSIM Plans.
Stay connected across Japan, South Korea, India, Thailand, Singapore, Malaysia, Indonesia, Philippines, Vietnam, China, Hong Kong and 9 more Asian destinations — one eSIM, no SIM swapping.
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How much does a Asia eSIM cost?
A Asia travel eSIM from roamsync.co starts at $1.02 for 502 MB valid 1 day. 36 plans are available for Asia, priced from $1.02 to $188.60, with validity from 1 day to 180 days. Data allowances run from 502 MB up to 100 GB. 3 unlimited-data options are also offered, subject to a fair-use policy. Connections run at 5G / 4G / 3G / 2G speeds on local partner networks. Every plan is data-only: it carries mobile internet but does not include a local Asia phone number, so calls and messages travel over internet apps such as WhatsApp. Activation is by QR code, delivered to your email and WhatsApp within seconds of purchase, and the profile installs in about two minutes on any eSIM-capable iPhone, Samsung or Google Pixel. Prices are listed in US dollars and converted to your local currency at checkout. Plans can be bought and installed before departure, so the eSIM is ready the moment you land.
| Data | Validity | Price (USD) |
|---|---|---|
| 502 MB | 1 day | $1.02 |
| 2.0 GB | 15 days | $6.00 |
| 5.0 GB | 15 days | $4.77 |
| 20 GB | 30 days | $15.17 |
| 50 GB | 30 days | $96.72 |
| Unlimited | 7 days | $19.80 |
Representative selection of 36 available Asia plans. Prices in USD, updated 4 August 2026. Live prices in your local currency are shown above.
Asia Multi-Country eSIM Travel Guide
In short: RoamSync.co's Asia eSIM gives you instant prepaid mobile data in Asia the moment you land or switch it on — no physical SIM, no waiting. Check your device compatibility first, follow the quick activation guide, and read more about the GSMA eSIM standard this runs on.
The RoamSync.co Asia regional eSIM covers 20 countries across East Asia, South Asia, and Southeast Asia. Whether you are exploring Tokyo, attending meetings in Singapore, holidaying in Bali, or backpacking through Vietnam and Thailand, a single plan keeps you connected throughout.
Plans are priced to fit any budget, making the Asia eSIM one of the most affordable ways to stay online across the continent. All plans work on eSIM-capable devices with no PTA blocking, as they operate through international roaming partners.
Compatible Devices
- iPhone 11, 12, 13, 14, 15, 16 Series & SE (2nd Gen+)
- Samsung Galaxy S20, S21, S22, S23, S24 Series
- Samsung Galaxy Z Fold & Z Flip Series
- Google Pixel 4, 5, 6, 7, 8, 9 Series
- Motorola Razr, Edge & most unlocked Android flagships
Asia eSIM FAQs
Answers to the questions we get asked most often.
Pricing and coverage details last updated
The RoamSync.co Asia regional eSIM covers 20 countries: Japan, South Korea, China, Hong Kong, Taiwan, India, Bangladesh, Sri Lanka, Pakistan, Thailand, Singapore, Malaysia, Indonesia, Philippines, Vietnam, Laos, Uzbekistan, Kazakhstan, Kyrgyzstan, and Macau.
Yes. The Asia regional eSIM from RoamSync.co works seamlessly across all 20 covered countries. You can travel from Japan to South Korea to Thailand to Singapore without swapping SIMs or purchasing local data plans. Coverage activates automatically when you land in each supported country.
Yes. The Asia eSIM covers all major Southeast Asian destinations in the plan: Thailand, Singapore, Malaysia, Indonesia, Philippines, Vietnam, and Laos. It is the ideal single-plan solution for multi-country trips through the region, with flexible plans to fit any budget.
Most eSIM-capable phones from the last few years work fine — this includes iPhone XS and later, Google Pixel 4 and later, Samsung Galaxy S20 and later (including Z Fold/Flip models), and recent OnePlus and Motorola devices. Your phone also needs to be carrier-unlocked. If you're not sure, check our device compatibility checker before you order.
While you're still on Wi-Fi (ideally before you fly), open Settings on your phone, go to Mobile/Cellular Data, choose Add eSIM or Add Data Plan, and scan the QR code from your order confirmation. Leave the new eSIM line installed but inactive until you land, then switch on Data Roaming for that line.
Yes. The eSIM runs on a separate line purely for data, so your existing SIM stays in the other slot for calls and SMS on your normal number — most travellers keep both active throughout their trip.
Yes — once the data line is active, every internet-based app works exactly as it would on a local SIM: WhatsApp, FaceTime, Google Maps, ride-hailing apps, streaming and email all run over the eSIM's data connection with no extra setup required.
You won't be cut off with unexpected charges — instead, simply come back to roamsync.co and purchase another plan or a top-up (where supported, this is shown as the plan's Top-Up Protocol in the order details). The new data is applied to the same eSIM profile, so there's no need to reinstall anything.