The first time I flew into Beijing Capital for a trade-conference brief, I'd assumed the hotel Wi-Fi would let me check email. It didn't. Gmail loaded a blank page, WhatsApp stuck on "connecting," and Google Maps returned a server error. I spent the first evening of the trip downloading a VPN that worked half the time and paying for premium service I didn't actually need. The conference sponsor explained on day two that a travel eSIM from outside China routes through Hong Kong and bypasses the whole problem. The next trip I bought one at the Tokyo layover and landed in Shanghai Pudong with Gmail already syncing.
Why buying an eSIM beats the airport kiosk (and beats a local SIM)
China Mobile, China Unicom, and China Telecom all operate prepaid kiosks at Beijing Capital, Shanghai Pudong, and Shenzhen airports. A local SIM is a real option for a long stay, but for short tourist and business visits the local SIM has a genuine downside: data routes through the Chinese domestic internet and hits the same content restrictions as Chinese residents experience. Google, WhatsApp, Gmail, Instagram, YouTube, and most Western social platforms don't work without a VPN. Even a VPN is often slow and sometimes blocked outright.
A travel eSIM from one of the tracked providers routes through Hong Kong or another international gateway and bypasses the firewall for most services. You get working Gmail, WhatsApp, Google Maps, and cloud services from the moment you land, without any VPN. This is the single biggest reason to choose a travel eSIM over a local Chinese SIM for short visits.
Most travellers into China fit one of three shapes: business visitors concentrated in Beijing, Shanghai, Shenzhen, or Guangzhou; cultural and historical travellers covering the Great Wall, Xi'an, Guilin, and Shanghai classics; and wider Asia circuits linking China with Japan, Korea, or Southeast Asia. All three want working international services from the gate onward.
What China Mobile and Unicom coverage actually looks like
Urban coverage in China is excellent. Beijing's Chaoyang, Haidian, Dongcheng, and Xicheng districts all have strong 4G and extensive 5G. Shanghai's Pudong financial district, Puxi's former concessions, and the airport corridor have continuous coverage. Shenzhen and Guangzhou are similarly well-covered. Tier-two cities — Chengdu, Chongqing, Hangzhou, Nanjing, Xi'an — have solid 4G and growing 5G.
High-speed rail corridors (Beijing-Shanghai, Beijing-Guangzhou, Shanghai-Hangzhou-Shenzhen) have continuous coverage on the trains themselves. The drive from Beijing to the Great Wall at Mutianyu stays covered; Badaling is similar. Xi'an and the Terracotta Warriors site have strong coverage. Guilin, Yangshuo, and the Li River cruise route have 4G in town and on the river with some thinning on the hills.
More remote areas vary. Tibet has coverage in Lhasa and on the main highways but thins fast in the countryside. Xinjiang has coverage in Urumqi and Kashgar with mixed rural quality. Yunnan's tourist routes to Dali, Lijiang, and Shangri-La have coverage in towns and on main highways.
Most travel eSIMs route through China Mobile or China Unicom depending on partner agreements, with the international gateway sitting in Hong Kong.
How the major eSIM providers compare in China
Pricing models vary across providers. Custom plans, where you set data amount and validity independently rather than picking from preset bundles, are 99esim's distinguishing feature and the only option in the tracked set for that level of flexibility. Airalo sells fixed bundles with the widest country list in the category. Holafly sells unlimited-day windows. Nomad has solid Asia-Pacific depth on a fixed-bundle model. Ubigi prices on short-validity country tiers.
Chinese pricing sits well inside the Asian normal band across every tracked provider. All five tracked providers route internationally, which is the critical functional feature. Holafly's per-day unlimited model is usable for business travellers who need heavy data without meter anxiety. Per-GB economics on fixed-bundle providers are competitive. The matrix below spells out the per-axis shape for China specifically.
Install timing: when to set it up
Install the eSIM the night before you fly, or during a Tokyo, Seoul, Singapore, or Hong Kong layover. The QR code generates immediately after payment; scan it with your phone's eSIM settings; the profile installs but doesn't activate until it first sees a Chinese tower. At the gate, switch your home SIM's data off and land at Beijing Capital, Shanghai Pudong, or Guangzhou Baiyun with Gmail and WhatsApp already working.
iOS 17.4+ devices can install directly from a provider's app without scanning a QR code, on providers that support it. Android users still scan a QR code, which takes thirty seconds.
Who should pick what
A one-week Beijing plus Shanghai business or cultural trip works on a 5 to 10 GB plan across any of the tracked providers. Custom-plan providers let you size precisely.
A two-week classical China circuit (Beijing, Xi'an, Shanghai, Guilin) benefits from a 10 to 20 GB plan because translation apps, navigation in large cities, and photo uploads from major sites add up faster than a pure business trip. 99esim's custom plans let you spec to the exact trip length.
A multi-country East Asia circuit extending into Japan, Korea, or Hong Kong wants an Asia regional plan, not a China-only plan. Compare covered-country lists because not all Asia plans include mainland China.
A heavy streamer or content creator who wants to video-call and post from China without meter anxiety fits Holafly's unlimited-day model better than per-GB providers.
A short two- or three-day business layover in Beijing or Shanghai fits Ubigi's short-validity tiers, which most competitors don't offer.
A group of three or more travelling together, particularly a business delegation or family tour, benefits from 99esim's group eSIM, which covers up to four devices on one purchase. None of the tracked competitors offer that product today.
A note on apps that only work with international routing
Besides the headline services (Gmail, WhatsApp, Google Maps), several apps that Western travellers take for granted also depend on international routing inside China: Uber does not operate locally, Google Translate works but degrades without network access, iCloud photo uploads can fail silently on local routing. A travel eSIM with international routing keeps all of these working. If you're also going to spend time with Chinese residents or colleagues, WeChat is still essential locally; download it before you fly and accept that some conversations will move to WeChat regardless of what you're using for everything else.