Does It Work In

Verified travel compatibility for eSIMs, VPNs, Alipay/WeChat Pay, IC cards and maps abroad.

Hosted MCP Server

npx add-mcp 'https://doesitworkin.com/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Destination Compatibility Hubs

Status breakdown across eSIM roaming, VPN blocking, foreign cards, maps and AI access.

All 11 hubs →

China (Mainland)

East Asia · 8 services checked

CN

2 OK · 2 Cond · 3 Workaround · 1 Blocked

Install a Singapore- or Hong Kong-routed travel eSIM (Airalo or Nomad) and link a foreign Visa/Mastercard inside Alipay and WeChat Pay before you board your flight.

8 field guidesOpen hub →

Europe (EU, UK & Switzerland)

Europe · 3 services checked

EU

3 OK · 0 Cond · 0 Workaround

Ensure your European regional eSIM explicitly includes Switzerland and the UK (non-EU), and always choose to pay in EUR/GBP/CHF—never USD—on card terminals.

1 field guideOpen hub →

Hong Kong

East Asia · 4 services checked

HK

2 OK · 1 Cond · 1 Workaround

Google and WhatsApp work without a VPN, but ChatGPT and Claude block Hong Kong IPs—use a VPN or a Singapore-routed eSIM to access AI tools.

2 field guidesOpen hub →

Indonesia (Bali & Jakarta)

Southeast Asia · 5 services checked

ID

3 OK · 1 Cond · 1 Workaround

Use a Telkomsel-backed roaming eSIM (Airalo or Nomad) to skip airport IMEI registration queues and automatically bypass Indonesia's Reddit DNS block, and link a Wise card to Grab and Gojek before landing.

1 field guideOpen hub →

Japan

East Asia · 5 services checked

JP

2 OK · 2 Cond · 1 Workaround

Add a Suica or PASMO directly in Apple Wallet before arrival, and pick a low-latency eSIM (Ubigi or Nomad) instead of carrying a bulky Pocket Wi-Fi.

4 field guidesOpen hub →

South Korea

East Asia · 3 services checked

KR

1 OK · 1 Cond · 1 Workaround

Google Maps cannot give walking or driving directions in South Korea—install Naver Map or KakaoMap in English mode before landing, and bring a physical chip card for T-money.

2 field guidesOpen hub →

Taiwan

East Asia · 3 services checked

TW

2 OK · 1 Cond · 0 Workaround

Taiwan enforces NCC real-name registration on domestic carrier eSIMs; use a foreign roaming eSIM or pre-book a Chunghwa Telecom airport pickup pass on Klook.

1 field guideOpen hub →

Thailand

Southeast Asia · 3 services checked

TH

2 OK · 1 Cond · 0 Workaround

Skip the 220 THB Thai ATM fee by linking a Wise or Revolut card inside Grab and using contactless Visa/Mastercard on Bangkok MRT; install an AIS/DTAC eSIM before arrival.

1 field guideOpen hub →

Turkey

Middle East & Europe · 5 services checked

TR

1 OK · 3 Cond · 1 Workaround

Download, install, and activate your Turkey eSIM profile AND a VPN before boarding your flight; once on Turkish Wi-Fi or local cellular networks, eSIM provider websites and top-up portals are blocked without a VPN.

1 field guideOpen hub →

United Arab Emirates (Dubai & Abu Dhabi)

Middle East · 5 services checked

AE

3 OK · 1 Cond · 1 Workaround

WhatsApp and FaceTime calls fail on Dubai hotel Wi-Fi and free airport SIMs; install an obfuscated VPN (ExpressVPN, NordVPN, or Proton VPN Stealth) before flying, or use a foreign roaming eSIM that tunnels traffic outside the UAE.

1 field guideOpen hub →

Vietnam

Southeast Asia · 3 services checked

VN

2 OK · 1 Cond · 0 Workaround

Choose a travel eSIM that roams on Viettel (Airalo Xin Chao or Nomad) rather than Vietnamobile, and link your foreign card in the Grab app before leaving home.

1 field guideOpen hub →

Pre-Departure Field Guides

Official vendor claim vs. verified on-the-ground behavior and pre-boarding checklists.

All 28 guides & comparisons →

Conditional

China (Mainland)Payments

Can Foreigners Use Alipay in China with a Visa or Mastercard?

Yes. Foreigners can link international Visa, Mastercard, JCB, Diners Club, and Discover cards directly to the standard Alipay app. Transactions up to 200 CNY (~$28) are fee-free; payments above 200 CNY incur a 3% international card processing fee.

4 pre-flight steps· Top pick: Wise

Read →Workaround

China (Mainland)AI Tools

Does ChatGPT Work in China, and How to Access It Safely?

ChatGPT, Claude, and Gemini are double-blocked in China: blocked by the Great Firewall AND geo-blocked by OpenAI/Anthropic on both mainland Chinese and Hong Kong IPs. To use ChatGPT in China without a VPN, you must use an eSIM whose exit node is in Singapore (such as Airalo Chinacom), not Hong Kong.

3 pre-flight steps· Top pick: Airalo

Read →Works

China (Mainland)Transit

How Foreigners Use DiDi & Book 12306 High-Speed Trains in China (2026 Guide)

You do NOT need the standalone Chinese DiDi app or a Chinese bank account. Open the DiDi Mini Program directly inside Alipay—it runs in English, accepts your linked foreign Visa/Mastercard, and bills under the 200 CNY fee-free threshold on almost every city ride. For China High-Speed Rail (G/D trains), book via Trip.com in English: it syncs directly with 12306 so you enter stations by scanning your physical passport at the gate.

4 pre-flight steps· Top pick: Trip.com

Read →Works

China (Mainland)eSIM

Does an eSIM Work in China, and Does It Bypass the Great Firewall?

Yes. International roaming eSIMs connect to China Unicom, China Mobile, or China Telecom towers but tunnel traffic through Singapore or Hong Kong, so Google, Gmail, WhatsApp, and Instagram work immediately—provided you install the eSIM before departure.

4 pre-flight steps· Top pick: Airalo

Read →Blocked

China (Mainland)Maps

Do Google Maps, Gmail, and WhatsApp Work in China?

Even with a roaming eSIM or VPN that unblocks Google servers, do NOT use Google Maps for navigation in mainland China: its map data is years out of date and shifted by 100–600 meters due to China's GCJ-02 coordinate system. Use Apple Maps (on iPhone) or Amap (Gaode Maps, now with English UI).

3 pre-flight steps· Top pick: Airalo

Read →Workaround

China (Mainland)VPN

Do Instagram, WhatsApp & TikTok Work in China & Hong Kong? SIM & Roaming Rules

Instagram, WhatsApp, YouTube, and Gmail are blocked on mainland China Wi-Fi and domestic SIMs, but work automatically when you use a foreign roaming eSIM (Airalo or Nomad) or a dedicated IEPL VPN (UCSS / Proton VPN). International TikTok has an extra catch: TikTok reads your phone's active SIM card Mobile Country Code (MCC) and blocks feeds if it detects a mainland China (+86) or Hong Kong (+852) SIM—even with a VPN.

4 pre-flight steps· Top pick: Airalo

Read →Workaround

China (Mainland)VPN

Which VPNs Actually Work in China in 2026?

Do not rely on a single consumer VPN in mainland China. Standard WireGuard and OpenVPN protocols are blocked within minutes; use a roaming eSIM as your primary bypass and keep an obfuscated VPN (Proton VPN Stealth or ExpressVPN Lightway) installed before departure for hotel Wi-Fi.

4 pre-flight steps· Top pick: UCSS (UnderCurrentSS)

Read →Conditional

China (Mainland)Payments

Does WeChat Pay Work with Foreign Credit Cards in China?

Yes, once you complete passport verification inside WeChat. While Alipay is more forgiving for metro turnstiles and English mini-programs, you still need WeChat Pay because many Chinese cafes and restaurants use WeChat Mini Program table QR codes for ordering.

3 pre-flight steps· Top pick: Wise

Read →Works

Europe (EU, UK & Switzerland)eSIM

Europe Regional eSIM Guide: Do EU Plans Work in the UK, Switzerland & Turkey?

If your European itinerary crosses into Switzerland, the United Kingdom, Norway, or Turkey, buy a multi-country regional eSIM (Airalo Eurolink, Saily Europe, Maya Europe, or SimOptions Orange Holiday) rather than a single-country EU SIM. Because Switzerland is outside the EU/EEA roaming zone, domestic EU carrier SIMs frequently charge €3–€10/MB the moment your train crosses the Swiss border.

4 pre-flight steps· Top pick: Saily

Read →Workaround

Hong KongAI Tools

Does ChatGPT Work in Hong Kong, or Do You Need a Non-HK eSIM / VPN?

No, ChatGPT and Claude do not work on local Hong Kong Wi-Fi or local Hong Kong SIM cards because OpenAI and Anthropic do not include Hong Kong in their supported territories. However, because Hong Kong does not block VPNs, any standard VPN (NordVPN, Surfshark, Proton VPN) or a Singapore-routed eSIM fixes this instantly.

3 pre-flight steps· Top pick: NordVPN

Read →

Head-to-Head Comparisons

Side-by-side routing, carrier partners, throttling thresholds and refund rules.

View all →

Works

Head-to-HeadeSIM

Airalo vs. Holafly vs. Saily (2026): Data Caps, Fair-Use Throttling & Hotspot Rules

Pick Airalo or Nomad when you want unthrottled fixed-GB data and unrestricted laptop hotspot tethering; pick Saily when you want a single reusable eSIM profile across 190+ countries; pick Holafly when you want day-based unlimited data on a single phone without counting gigabytes.

3 pre-flight steps· Top pick: Airalo

Read →Works

Head-to-HeadeSIM

Best Asia Regional eSIM (2026): Airalo Asialink vs. Nomad APAC vs. Yesim & Drimsim

If you are visiting 3 or more Asian countries on one trip (for example, Tokyo → Seoul → Hong Kong → Bangkok), a regional Asia eSIM (Airalo Asialink, Nomad APAC, Saily Asia, or Yesim) saves you from installing separate eSIMs and wasting leftover gigabytes in each country. Better yet, Airalo Asialink routes mainland China and Hong Kong traffic through Singapore—meaning ChatGPT, Google, and WhatsApp stay working across every border.

3 pre-flight steps· Top pick: Airalo

Read →Workaround

Head-to-HeadVPN

China Travel eSIM vs. VPN vs. IEPL Lines (2026): What Actually Bypasses the GFW?

For a 1–3 week trip, a Singapore-routed roaming eSIM (Airalo or Nomad) is the most reliable primary bypass—it works the second your plane touches down with zero GFW cat-and-mouse dropouts. For hotel Wi-Fi and laptop work, pair your eSIM with either a dedicated IEPL leased-line service (UCSS) for rock-solid speeds or an obfuscated consumer VPN (Proton VPN Stealth / ExpressVPN) installed before departure.

3 pre-flight steps· Top pick: Airalo

Read →Works

Head-to-HeadeSIM

Ubigi vs. Airalo vs. Nomad for Japan (2026): NTT Docomo 5G, Latency & Hotspot Test

Pick Ubigi if you want true 5G on NTT Docomo and KDDI with a local Japanese IP exit (~20–35ms ping) so pages load instantaneously; pick Nomad if you want the best value 10 GB–50 GB fixed data bundles with dual-carrier switching; pick Airalo (Moshi Moshi) if you already use the Airalo app and want reliable SoftBank/KDDI 4G/5G coverage with simple top-ups.

3 pre-flight steps· Top pick: Ubigi

Read →Works

Head-to-HeadPayments

Wise vs. Revolut for International Travel (2026): Weekend FX Fees, Alipay & ATM Limits

Carry both if possible—use Wise as your primary card so you never get hit by Revolut's 1% weekend exchange rate surcharge on Friday–Sunday restaurant bills, and keep Revolut in your wallet for a second monthly free ATM withdrawal allowance and disposable virtual cards.

3 pre-flight steps· Top pick: Wise

Read →

Tested eSIM, VPN & Payment Providers

Transparent pricing and known caveats. Outbound /go/ links may earn a commission.

All 27 providers →

Airalo

airalo.com

esim

$4.50 / 1 GB (7 days)

Fixed-data travel eSIM marketplace covering 200+ destinations; mainland China Chinacom and Asialink packs route via Singapore or Hong Kong, bypassing the Great Firewall without a separate VPN.

Holafly

esim.holafly.com

esim

$6.90 / 1 day unlimited

Day-based unlimited travel eSIMs with built-in roaming tunnel for China and Asia; convenient for single-device travelers, though carrier fair-use policies throttle heavy sustained video or hotspot use.

Saily

saily.com

esim

$3.99 / 1 GB (7 days)

Travel eSIM service built by Nord Security using a single installable eSIM profile for all trips, with optional virtual location routing and ad-blocking features.

Nomad eSIM

getnomad.app

esim

$4.00 / 1 GB (7 days)

Strong Asia-Pacific eSIM provider partnering with dual local networks in Japan (IIJ/KDDI), China (China Unicom/Telecom via HK exit), and Southeast Asia, with unrestricted hotspot sharing on fixed-GB plans.

Yesim

yesim.app

esim

$8.40 / 3 GB (7 days)

Swiss-based travel eSIM with global pay-as-you-go balance, fixed data bundles, and virtual phone numbers for OTP verification.

Drimsim

drimsim.com

esim

€10 eSIM activation + pay-per-MB data

Universal pay-as-you-go travel eSIM and SIM card that bills per megabyte instead of fixed-day bundles, with automatic balance top-up and no package expiration across multi-country trips.

aloSIM

alosim.com

esim

$4.50 / 1 GB (7 days)

Prepaid data eSIM provider that pairs local carrier data packages with optional Hushed voice/SMS numbers for travelers who need both data and calls.

Maya Mobile

maya.net

esim

$5.00 / 3 GB (30 days)

Travel eSIM provider focused on 30-day validity windows and transparent hotspot rules across Europe, Asia, and the Americas.

Plain Data for AI Agents & Scripts

Fetch this page as Markdown or JSON, or query all guides via REST and MCP. Verified 2026-11-12.

/index.md.json /llms.txt /mcp