For most foreign visitors, staying connected in Shanghai comes down to three workable options: a local prepaid SIM card, an international eSIM, or your home carrier’s roaming plan. Each has a clear trade-off. We have watched too many first-time China International Hardware Show (CIHS) buyers land at Pudong, connect to airport Wi-Fi, and realize their maps, email, and messaging apps have gone quiet. This guide is the setup we would give a colleague before they board.
Your Three Main Options at a Glance
| Option | Best for | Setup | Chinese phone number? |
| Local prepaid SIM | Longer stays, supplier calls, local apps | Passport at a carrier store after arrival | Yes |
| International eSIM | Data and app access before you land | Buy online and install before departure | Usually no |
| Home-carrier roaming | Short stays and zero setup | Enable with your operator before departure | No |
Think of this table as three tools rather than one decision. For a serious sourcing trip, we often see buyers use a dual setup: an international eSIM for everyday data and messaging, plus a local SIM if they need to call Chinese suppliers or receive SMS codes from local services. If you are in Shanghai for less than 48 hours, roaming is usually enough.
Buying a Local SIM Card in Shanghai
The easiest place to buy is the official carrier counter area at Shanghai Pudong International Airport [2]. China Mobile, China Unicom, and China Telecom all operate service points there, and city-center stores work equally well if you already have a way to navigate to them.
Bring your physical passport. A photo or scan will not be enough: Chinese regulations require real-name registration for every mobile number [1]. Your phone also needs to be network-unlocked and should support the LTE or 5G bands used by the carrier. Most modern phones bought outside China work, but if your device was locked by a home operator, the local SIM will not activate.
Before you leave the counter, insert the SIM, disable airplane mode, and load one web page. Confirm the plan’s data allowance, validity period, voice minutes, and top-up method. Pricing changes frequently; as a broad planning figure we see short-term visitor packages commonly fall between RMB 100 and RMB 300 depending on data volume and duration, but verify the current brochure at the counter. Keep the receipt and note your new number in a notes app; you will need it for some Wi-Fi logins and app registrations.
Using a China eSIM Before You Fly
An international eSIM is the lowest-friction option for data-only access. You buy it online before departure, scan a QR code from the provider, and activate it when the plane lands. Because eSIM data usually routes through a network outside mainland China, many international apps will keep working the way they do at home—though this can vary by provider and plan.
The trade-off is that eSIMs sold to travelers are usually data-only. You will not receive a Chinese phone number, so use them for email, map navigation, translation, messaging, and research. If you need to call Chinese suppliers directly or register for services that require a local number, pair the eSIM with a local prepaid SIM if your phone has dual-SIM support.
Do the setup before you board. After arrival, you may find it harder to browse international eSIM providers on a restricted connection.
International Roaming: The Predictable Fallback
Roaming is the option with the least to configure. You keep your home number, receive SMS as usual, and because your traffic generally exits through your home carrier’s network, the apps you use every day often continue to work without a local setup step.
The cost is the main risk. Check your operator’s daily pass, data caps, and speed rules before departure, and turn off cloud backups, automatic app updates, and background video downloads. Roaming works well for a short trip or as a first-day bridge while you sort out a local SIM, but it is rarely the cheapest base layer for a full sourcing week.
VPNs in China: Plan Before You Arrive
Let us be straightforward: many services that international visitors use daily are not reachable on a standard local mobile data connection or hotel Wi-Fi in mainland China. That is the practical reality behind the VPN question.
For a short business trip, the most reliable approach is usually to choose a connection path that routes your traffic outside mainland China: home-carrier roaming or a reputable international eSIM. If your company requires a VPN for internal systems, install it, update it, and test it with your IT team before departure. Downloading VPN software after you land is often difficult, and installing a random app at a trade-fair venue creates a security risk you do not want on a sourcing trip. Check with your IT or legal team about what is allowed for your profile; do not treat a last-minute download as the backup plan.
This is a good moment for a practical checkpoint: if any of this connectivity planning feels uncertain, our Buyer Services Team can help you map out the arrival-day logistics. Reach us at [email protected] or +86 21 6390 6161-832, and we will point you to current visitor resources for CIHS 2026.
Wi-Fi at SNIEC and Around Shanghai
Hotels in Shanghai generally provide reliable Wi-Fi, but it operates under the same content restrictions as a local mobile connection. Public Wi-Fi in shopping malls, cafés, and transit hubs often requires a local phone number to log in, which is another reason to keep a local SIM or eSIM available.
At the Shanghai New International Expo Centre (SNIEC) and similar large venues, public Wi-Fi can help in concourses and registration areas, but treat it as a backup. When the halls are full, public Wi-Fi slows down exactly when you need to pull up a supplier’s booth number or a price reference. We recommend carrying your own mobile data as the primary connection and using venue Wi-Fi only when it is clearly the stronger signal.
Set Up Payment and Navigation Apps Before You Land
A connected phone becomes useful faster if the core apps are ready. Before departure, install or update Alipay and WeChat Pay and bind a foreign bank card. Both platforms now offer international visitor flows, but card verification is much easier to complete from home than from a hotel room at midnight.
Download your navigation app, save offline maps for Shanghai and the SNIEC area, and install a translation app with the Chinese language pack downloaded offline. These small steps mean your first minutes on the ground are spent navigating, not recovering from a dead phone.
If your eSIM is data-only, keep your home SIM active for any SMS verification codes from banks or apps. If your phone can hold two SIMs, that dual setup is usually the most flexible combination for a buyer.
Making It Through a Full Fair Day
Connectivity pressure is highest on the floor: you are scanning QR codes, messaging suppliers, and pulling up product photos. Carry a power bank with enough capacity for at least two full phone charges, and bring a plug adapter suitable for China’s 220V sockets. Do not rely on public USB charging points for anything but emergency power.
Save a note with your hotel name and address in Chinese, your local phone number if you have one, and a colleague’s contact. If a connection drops at the wrong moment, you want the fallback information stored on the phone, not only in the cloud.
Plan Your Connected CIHS Visit
Connectivity is one of the few trip elements you can fully fix before the plane takes off. Choose a primary connection, prepare the backup, and leave yourself free to focus on the supplier conversations that actually move a sourcing program forward.
Register for CIHS 2026 and we will send practical visitor updates to help you plan the trip end to end. For registration questions, contact our Buyer Services Team at [email protected] or +86 21 6390 6161-832.
FAQ
Do I need a VPN to use WhatsApp, Gmail, or Google Maps in China?
Not necessarily. If you use home-carrier roaming or an international eSIM that routes data outside mainland China, many of those services will work without a separate VPN. On a local SIM or hotel Wi-Fi, access is often restricted.
Can I buy a Chinese SIM card at Shanghai Pudong Airport?
Yes. China Mobile, China Unicom, and China Telecom all have service points in the arrivals area. Bring your passport, an unlocked phone, and enough time to activate the SIM before you leave the counter.
Is an eSIM better than a local SIM for a short trip?
For a stay of two to four days focused on data and messaging, an international eSIM is often simpler because you set it up before departure. If you need to call Chinese suppliers or receive local SMS codes, add a local SIM.
Do I need a Chinese phone number to use Alipay or WeChat Pay?
A Chinese phone number is not always required, but a working number can simplify verification and some in-app services. You can bind a foreign card to Alipay or WeChat Pay with your home number in many cases, but set this up before you travel.
Will my hotel Wi-Fi work with Google and Gmail?
Hotel Wi-Fi is usually fast, but it is part of the same mainland network environment as a local SIM. If you need guaranteed access to those tools, use an international eSIM or roaming rather than expecting hotel Wi-Fi to solve it.
References
[1] Ministry of Industry and Information Technology of the People’s Republic of China. “Telephone User Real-Name Registration Regulations.” miit.gov.cn
[2] Shanghai Airport Authority. “Pudong Airport Service Guide.” shanghaiairport.com
