🇨🇳 The China Exception — Why This eSIM is Different
China blocks Google, Instagram, WhatsApp and YouTube. Local Chinese SIM cards are subject to the same blocks. VPNs are unreliable and often cut out at the worst moments.
Holafly uses international roaming data — meaning your connection routes through international carriers, bypassing the Great Firewall entirely. I used it in Shanghai and Beijing. Google Maps worked. Instagram worked. WhatsApp worked. No VPN, no settings to change.
Get China eSIM — Code KIMCHIBOY →Choose Your Destination
Click your country — each link goes directly to Holafly’s page for that destination. Use code KIMCHIBOY for 5% off.
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Why I Use Holafly on Every Trip
South Korea — KAIST, Seoul
Lived here for a year at KAIST. Holafly runs on SK Telecom — Korea’s #1 network — with genuine unlimited data and real 5G in Seoul, Busan, and Jeju. Used it daily for Naver Maps, KakaoTalk, subway navigation, and food delivery. Zero drops, zero throttling, no SIM swap at Incheon. Curious how it compares to Airalo for Korea specifically? Full breakdown here →
🇰🇷 Best eSIM for South Korea 2026 — unlimited, SK Telecom, works from the moment you land.
China — Shanghai, Beijing
Used Google Maps, Instagram and WhatsApp without a VPN. This is the number one reason I recommend Holafly for China specifically. Nothing else works this reliably.
Hong Kong — City University
Studied here for a year. The eSIM kept me connected through typhoon season when local networks were overloaded. International roaming held steady.
Japan — Tokyo, Osaka
Strong signal everywhere including the Shinkansen. Video calls worked at 200km/h. Japan’s infrastructure is excellent — Holafly taps straight into it.
How to Set Up Your eSIM in 3 Steps
Buy & Get QR Code
Choose your destination and plan on Holafly. You instantly receive a QR code by email. Use code KIMCHIBOY for 5% off at checkout.
Scan & Install
Go to Settings → Mobile Data → Add eSIM. Scan the QR code. Done. Takes under 2 minutes. Your home SIM stays active for calls.
Activate on Arrival
Switch to the eSIM when your plane lands. Full data before you clear customs. No airport SIM shop, no queue, no guessing.
🗺️ Best eSIM by Travel Route — Asia 2026
The right eSIM depends on where you’re going, not just which brand sounds familiar. Here’s the honest breakdown by route.
| Route | Best Pick | Why | Watch out for |
|---|---|---|---|
| 🇰🇷 Korea only | Holafly Korea | Unlimited, fast, works on SK Telecom | No hotspot |
| 🇯🇵 Japan only | Airalo Japan | Cheapest per GB, reliable | Passport verification now required (2026) |
| 🇰🇷🇯🇵 Korea + Japan | Holafly Asia | One eSIM covers both, unlimited | Costs more than country-specific |
| 🇨🇳 China included | Holafly (only major eSIM that works) | Bypasses the Great Firewall | No hotspot; other eSIMs fail in China |
| 🌏 SE Asia multi-country | Airalo Asialink or Saily | 18-21 countries, cheapest regional | Doesn’t include China or India reliably |
| 🌏 Full Asia 3+ weeks | Holafly Asia regional | Unlimited across 16+ countries, no top-ups | Premium price — only worth it for heavy users |
Japan Now Requires Passport Verification for eSIM Activation
As of 2026, Japan’s Ministry of Internal Affairs and Communications requires passport verification for all tourist eSIM activations — including from international providers like Airalo and Holafly. This means you cannot fully activate a Japan eSIM without completing an ID verification step.
📶 eSIM vs Local SIM Card — When to Use Which
- Visiting 2+ countries on one trip
- You want to keep your home number active
- Short trip (under 2 weeks)
- Your phone supports eSIM (iPhone XS+, Samsung S20+)
- You want to activate before landing
- Staying in one country 3+ weeks (much cheaper)
- You need hotspot heavily
- Your phone doesn’t support eSIM
- You’re in China (local SIM is more reliable)
- You need a local phone number
📊 All Major Asia eSIM Providers Compared — 2026
Every provider worth considering, ranked by overall value for Asia travel.
| Provider | Data | Countries | Price (7 days) | China? | Hotspot? |
|---|---|---|---|---|---|
| 🟢 Holafly ⭐ | Unlimited | 170+ | ~$27 (Korea) | ✓ Yes | ✗ No |
| 🔵 Airalo | Fixed GB | 200+ | ~$9 (Korea 3GB) | ✗ No | ✓ Yes |
| Saily | Unlimited* | 19 (Asia) | ~$22 (Asia) | ✗ No | ✓ Yes |
| Nomad | Fixed GB | 21 (APAC) | ~$20 (10GB) | ✗ No | ✓ Yes |
| Jetpac | Fixed GB | Multiple | ~$40 (30GB APAC) | ✗ No | ✓ Yes |
*Saily throttles to 1Mbps after 5GB/day · ⭐ Our recommendation for China + Korea + unlimited
Is Your Phone Compatible?
Most smartphones made after 2018 support eSIM. Check Settings → Mobile Data → Add Data Plan. If you see that option, you’re good.
Frequently Asked Questions
Does Holafly really work in China without a VPN?
Yes — because it uses international roaming data rather than a local Chinese SIM connection. Your data routes through international carriers that aren’t subject to China’s Great Firewall. Google, Instagram, WhatsApp and YouTube all work. I’ve tested this personally in Shanghai and Beijing.
What does “unlimited data” actually mean?
Holafly’s plans include unlimited data with no hard cap — unlike some competitors who throttle after 1-2GB. You can stream, navigate, and video call all day. Fair use policies apply for tethering (hotspot sharing).
Can I keep my regular SIM active at the same time?
Yes. Your home SIM stays in your phone and stays active for calls and texts. The eSIM runs alongside it as your data connection. You don’t remove anything.
How long does it take to activate?
Under 2 minutes. You receive the QR code instantly by email. Scan it in Settings, install the eSIM, and it’s ready. Activate it when you land — you’ll have data before you clear customs.
Does the 5% discount code work on all plans?
Yes — code KIMCHIBOY works on any Holafly plan for any destination. Enter it at checkout. The discount applies to the full plan price.
What is the best eSIM for South Korea in 2026?
Holafly on SK Telecom is the strongest choice — unlimited data, no tracking GB, instant QR activation. Airalo works too for budget short trips. Code KIMCHIBOY = 5% off Holafly.
Does Holafly work in South Korea?
Yes — Holafly partners with SK Telecom, Korea’s largest carrier. I used it for a full year near KAIST in Daejeon and across Seoul with zero connection issues.
Can I use the same eSIM for South Korea and Japan?
Yes — Holafly’s Asia regional plan covers both Korea and Japan on one eSIM, unlimited, without buying two separate plans. Perfect for Seoul + Tokyo trips.
Which plan should I get for a multi-country Asia trip?
Use the Asia regional plan — it covers Korea, Japan, China, Hong Kong, Thailand, Vietnam, Singapore and more under one eSIM. No need to buy separate plans for each country.
Never Hunt for a SIM Card Again
Scan a QR code before your flight. Land with full data. Works in China. No queue, no swap, no panic.
Related Reading
Affiliate links — commission at no extra cost to you. Prices last checked June 2026.