Best eSIM for Asia: Airalo, GigSky, Saily, Holafly & Ubigi Compared

Choosing an eSIM for Asia isn't hard because there aren't enough options. It's hard because most providers promise the same thing: seamless connectivity across multiple countries, unlimited data, and easy setup. But the reality? Each one handles things differently.

Some work across 20+ Asian countries with one plan. Others cover 16 and make you manually start the connection every time you land. Some slow your speeds after 2.5GB per day. Others won't tell you their throttling policy until you've already bought in.

If you're hopping between Thailand, Vietnam, Japan, and Singapore on the same trip, you need an eSIM Asia that works across all of them without buying separate plans or fiddling with settings at every airport. 

Here's what we found when comparing the top Asia eSIM providers.

GigSky: One eSIM for 20 Asian Countries Plus Maritime Coverage

GigSky covers 20 Asian countries with a single regional plan. Install the eSIM once through the app, and it stays on your phone for every trip. When you land in Bangkok, Tokyo, or Bali, it connects on its own. No toggling settings. No scanning anything new.

You can set it up with a QR code if that's your preference, but most people go through the app because it's faster. No waiting for an email to arrive.

Wie es funktioniert

Download the GigSky app. Pick your Asia regional plan. Install the eSIM Asia through the interface. That's it. The eSIM reactivates every time you enter one of the 20 covered countries. 

Flying from Vietnam to Japan to South Korea? You don't touch anything between flights. 

Coverage and Connectivity

GigSky operates as a mobile network operator. That means it partners directly with local carriers instead of reselling access. Your phone connects to the strongest available network in each country. If one network gets congested, it can switch to another.

This matters in places like rural Thailand or remote parts of Indonesia where signal strength isn't consistent. 

The eSIM Asia plan works across major destinations: Japan, South Korea, Thailand, Vietnam, Singapore, Malaysia, Indonesia, the Philippines. It also covers Cambodia, Laos, and Myanmar.

Taking a cruise that stops in Asian ports? The eSIM works on 290+ ships, so you're covered both at sea and on land. That's unique to GigSky.

Speed and Data Limits

Unlimited data plans come with a 2.5GB daily high-speed cap. After you hit 2.5GB in a 24-hour period, speeds throttle.

For most travelers, 2.5GB easily covers navigation, messaging, social media, and checking emails and lots more throughout the day. 

If you're streaming video or uploading high-res photos constantly, you'll notice the slowdown after that threshold. But for typical use? It's plenty.

Hotspot usage is unlimited. Share your connection with travel companions without worrying about separate data pools.

Free Data and Testing

If you have a Visa card issued in the Americas, Latin America, or the Caribbean, you're eligible for up to 5GB of free data.

Don't have a Visa card? GigSky offers a 100MB free trial with no payment method required. That's enough to verify the eSIM Asia works on your device and test connectivity in your first destination before you commit to a paid plan.

Am besten für

Travelers moving between multiple Asian countries who want one plan that handles everything. People taking Asian cruises with port stops. Anyone who values connection convenience over manually starting plans at every border.

Airalo: Budget-Focused Coverage Across 18 Asian Countries

Airalo covers 18 Asian countries. It positions itself as an affordable eSIM option for travelers who care about low upfront costs. 

You set it up using a QR code sent to your email, and you'll need to manually start the plan when you arrive at each destination.

Wie es funktioniert

After purchasing a plan, Airalo emails you a QR code. You scan it to install the eSIM. Then toggle your phone's data settings to turn it on once you land. 

The setup takes under five minutes. But you'll repeat this process each time you switch between countries unless you buy a regional plan.

Coverage and Connectivity

The Asia regional plan works across 18 countries. Popular destinations like Japan, Thailand, Vietnam, Singapore, and South Korea are covered. New Zealand and Australia aren't included. If those are on your itinerary, you'll need separate plans.

Airalo resells network access rather than operating as a direct carrier. Connectivity depends on the third-party networks they've partnered with. 

In major cities, that's rarely an issue. In rural or less-traveled areas, signal strength can be less reliable than providers with direct carrier relationships.

Speed and Data Limits

Unlimited plans throttle to 1 Mbps after you use 3GB of high-speed data in a 24-hour period. Once you hit that threshold, speeds drop until midnight when your daily allowance resets.

Hotspot usage is supported. Your travel companions will share that same 3GB daily pool.

Am besten für

Travelers sticking to major Asian cities who want lower upfront costs and don't mind manual setup. People comfortable troubleshooting connectivity issues if they come up in less-served areas.

Saily: Privacy-Focused eSIM with 19-Country Asian Coverage

Saily covers 19 Asian countries. It markets itself around user privacy and data protection. The setup process is more involved than other providers. You'll go through multiple steps in the app before you're connected.

Wie es funktioniert

Download the Saily app. Follow the multi-step installation process. It's not complicated, but it takes longer than GigSky's one-tap setup or Airalo's QR code scan. 

Once installed, the eSIM turns on when you land in a covered country.

Coverage and Connectivity

Saily's Asia plan works across 19 countries. Japan, South Korea, Thailand, Vietnam, Malaysia, and Singapore are included. 

Coverage is similar to Airalo and GigSky in terms of destination count. The countries included vary slightly.

Like Airalo, Saily resells network access rather than managing carrier partnerships directly. That works well in urban areas. Rural regions or network congestion can create connectivity gaps.

Speed and Data Limits

Saily offers the highest daily speed allowance among Asia eSIM providers. 5GB of full-speed data per 24-hour period. After you hit 5GB, speeds throttle to 1 Mbps or less depending on the local network.

If you're uploading lots of photos, video calling, or working remotely part-time, that extra 2.5GB headroom makes a difference. You can go longer before hitting the throttle.

Hotspot usage is supported with no separate data caps.

Am besten für

Travelers who care about privacy features and need higher daily data allowances. People willing to invest extra time in setup for better throttled-speed policies.

Holafly: Unlimited Data with Undisclosed Throttling

Holafly covers 16 Asian countries. Unlimited data plans are offered, but they don't publicly share their throttling policies. You know speeds will slow down after heavy usage. You won't know the threshold until you hit it.

Wie es funktioniert

You can set up Holafly through the app or via QR code. Once installed, the eSIM connects on its own when you arrive in a covered country.

Coverage and Connectivity

Holafly's Asia plan works across 16 countries. Popular destinations like Thailand, Vietnam, Japan, and South Korea are covered. 

The smaller country count means you'll need additional plans if you're visiting Cambodia, Myanmar, Laos, or less common Asian destinations.

Speed and Data Limits

Holafly advertises unlimited data but throttles speeds after undefined usage levels. Some users report throttling after 2GB daily. Others after 5GB. Without clear disclosure, you're estimating how much high-speed data you have.

Hotspot usage is capped at 500MB to 1GB per day. That limits how much you can share with travel companions.

Am besten für

Travelers visiting only major Asian cities who use moderate data and don't plan to hotspot extensively. People comfortable with undisclosed throttling policies.

Ubigi: Pay-As-You-Go Coverage Across 26 Asian Countries

Ubigi covers the most Asian countries. 26 in total. But it doesn't offer unlimited plans. You buy certain data amounts and pay for what you use.

Wie es funktioniert

You can install Ubigi through the app or via QR code. Once set up, you'll need to manually turn on the eSIM when you land at each destination.

Coverage and Connectivity

Ubigi's strength is breadth. With 26 Asian countries covered, it includes destinations other providers skip. Brunei, Pakistan, and Sri Lanka are on the list. 

If your itinerary extends beyond the typical Southeast Asia and East Asia circuit, Ubigi covers more ground.

Speed and Data Limits

No unlimited plans here. You purchase fixed data amounts. 1GB, 3GB, 5GB, 10GB. Pay for additional data once you run out. There's no daily throttling because there's no unlimited tier. But you're monitoring your usage manually.

Hotspot is supported. Data allowances work the same whether you're using them directly or sharing via hotspot.

Am besten für

Travelers who know their data needs and want to avoid unlimited plans with throttling. People visiting less common Asian destinations that other providers don't cover.

What to Consider Before Choosing an Asia eSIM

How Many Countries Are You Visiting?

Going only to Thailand? You don't need a 20-country regional plan. A single-country eSIM will cost less.

Flying Bangkok to Hanoi to Tokyo to Seoul? A regional plan saves you from buying four separate eSIMs and dealing with setup at each border.

How Much Data Do You Use?

Navigating with Google Maps, checking Instagram occasionally, and messaging on WhatsApp? 2.5GB daily is plenty.

Uploading videos to TikTok, working remotely part-time, or video calling family every night? You'll hit that cap faster. Plan around throttled speeds.

Do You Want It to Connect on Its Own?

Some travelers don't mind scanning QR codes and toggling settings every time they cross a border. Others want to land and have it work right away. If you're moving through multiple countries in a short time, the difference adds up.

Are You Taking a Cruise with Asian Port Stops?

Most eSIM providers only work on land. Cruising Southeast Asia and stopping in Bangkok, Ho Chi Minh City, Singapore, and Hong Kong? You need an eSIM that works both at sea and at each port. GigSky is the only option that covers both right now.

Do You Want to Test Before Paying?

Free trials let you check that the eSIM works on your phone and test connectivity in your first destination before paying for a full plan.

GigSky offers 100MB free with no card required. Up to 5GB if you're a Visa cardholder. The other providers don't offer free data.

Recap: Best eSIM for Asia

• GigSky works best for multi-country trips, cruise travelers, and anyone who wants it to connect on its own with the option to test up to 5GB free before buying.
• Airalo suits budget-conscious travelers sticking to major cities who don't mind manual setup and are comfortable with 1 Mbps throttled speeds.
• Saily fits travelers who need 5GB daily high-speed data and value privacy features enough to invest extra time in setup.
• Holafly works for moderate data users visiting popular destinations who don't need transparency on throttling thresholds.
• Ubigi covers the most Asian countries and suits travelers who want pay-as-you-go pricing without unlimited plans.

There's no single best eSIM for Asia. The right one depends on where you're going, how much data you need, and whether you value connection convenience over manual control.

If you're visiting multiple countries and want to test before committing, download the GigSky app and search "Asia" to see which regional plans match your itinerary. If you have a Visa card from the Americas, check if you're eligible for 5GB free.