Moving to Singapore does not sever your ties to the mainland. You may still book trains for a visit home, file something with the tax authorities, renew a document, or manage a China bank account. The catch is that many of these run through apps built for people physically inside China, so using China government apps from Singapore involves a few practical workarounds. This guide covers which apps newcomers still need, the mobile-number problem that trips everyone up, and how to handle trains, passports, payments, and banking from overseas. It stays factual and neutral, points you to official channels, and does not involve getting around any law.
Which China Apps Newcomers Still Need
Even after settling in Singapore, most people from the mainland keep a handful of China apps active. The exact list depends on your life, but the common ones fall into clear groups:
- Travel and transport: the 12306 railway app for booking high-speed and regular trains within China.
- Government services: national and city government service platforms, the personal income tax app, and the social security app used for pension and insurance records.
- Immigration and documents: the National Immigration Administration app, used for appointments and enquiries about exit and entry documents.
- Payments: Alipay and WeChat Pay, which many people keep for spending during visits and for sending money within family.
- Banking: your mainland bank’s mobile app for checking balances and managing an account you still hold.
You do not need all of these, but knowing the categories helps you plan which to keep working before you actually need them in a hurry.
The China Mobile Number Problem
The single biggest obstacle is the mobile number. Most mainland apps, and nearly all government and banking ones, send a one-time password by SMS to a China mobile number to log you in or confirm an action. If you let your mainland SIM lapse, you can find yourself locked out of the very apps you need most.
The practical solution most people use is to keep a mainland number alive. That can mean holding on to a China SIM in a dual-SIM phone, keeping a spare phone that stays registered, or maintaining a number on a plan that survives light use. Real-name verification is also common, meaning the account is tied to your identity documents, so the number and your ID need to match what the service already has on file.
Plan this before you move, or on an early trip back, because reactivating a lapsed number from overseas can be difficult. Treat your mainland number as a key you do not want to lose.
Booking Trains, Passports, and Government Services
For train travel within China, the 12306 app remains the official way to book, and it works from abroad once you can receive the login code. Book ahead of a trip home while you still have signal certainty, and keep your passport details in the app accurate if you travel on a passport rather than a mainland ID card.
For documents and immigration matters, the National Immigration Administration app and the relevant government service platforms let you make appointments and check requirements. Because rules for passports, exit and entry documents, and consular services can change, always confirm the current process through the official app or the Chinese Embassy in Singapore for consular questions. This is especially important for anything touching nationality or documents, where you should rely on official guidance and avoid assumptions.
Government service and tax apps generally work from overseas too, provided you can log in. The pattern is the same across all of them: the login code is the gatekeeper, so solve the number problem first and the rest usually follows.
Payments and Banking From Overseas
Alipay and WeChat Pay continue to function from Singapore for many uses, though some features assume a mainland card or context. They are handy for spending on visits home and for family transfers within China. Keep the linked mainland card and identity details current so a payment does not fail at an awkward moment.
Mainland banking apps let you watch and manage an account you still hold, but they lean heavily on the SMS code and real-name checks described above. If you plan to keep a China account open after moving, tell your bank while you are still in China, update your contact details, and understand what you can and cannot do remotely. For anything involving cross-border money movement, use licensed, official channels and remember that both China and Singapore have their own rules to follow.
China Apps and What You Need
This table maps the common apps to what they are for and the main thing that keeps them working from Singapore.
| App or service | What it does | Key thing to keep working |
|---|---|---|
| 12306 | Book China train tickets | Login code to a mainland number |
| Personal income tax app | Tax matters and records | Real-name login and OTP |
| Immigration app | Document appointments, enquiries | Passport or ID details up to date |
| Alipay / WeChat Pay | Payments and transfers in China | Linked mainland card and identity |
| Mainland bank app | Manage a China account | Active number and bank’s remote rules |
Across every row, the recurring theme is identity and the login code. Keep those stable and most mainland apps behave much as they did at home.
Keeping Two Digital Lives in Sync
There is no shame in living across two systems at once, and millions of people do exactly this. The trick is preparation rather than panic. Before you move, or during an early trip back, sort out your mainland number, update your identity and contact details on the apps that matter, and note which services you truly need. Then let the Singapore side of your phone grow naturally around your new life. Rules for government, immigration, and financial apps change over time, so verify current steps through each official app or the Chinese Embassy for consular matters, and use only official channels for anything sensitive.
Explore more
A well-organised phone makes cross-border life smooth. To keep both app stores and accounts tidy, read our guide on managing China and Singapore Apple IDs and app stores, and to protect every login from fraud, see using ScamShield and Singapore’s anti-scam tools.