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Why Do You Need a Mainland Number When Heading North?
Many Hong Kongers assume that using Hong Kong roaming is enough when spending money across the border, but in reality, if you want to do any of the following, you'll need a real-name registered Mainland phone number:
- Opening a Mainland bank account (the bank will send verification codes to your Mainland number)
- Registering for WeChat Pay / Alipay (Mainland version)
- Using apps like Meituan, Dianping, Didi for ride-hailing, or High-Speed Rail 12306 to receive verification codes
- Making restaurant reservations or leaving a contact number for hotel check-in
💡 In short: a Mainland number is the "key to life across the border" — without it, many digital services simply won't work.
How Hong Kongers Can Apply for a Mainland SIM Card
Hong Kong residents can use their Home Return Permit (Mainland Travel Permit for Hong Kong and Macau Residents) to register for a Mainland SIM card under their real name. There are three main ways to do it:
| Method | Where to Apply | Features |
|---|---|---|
| Border Checkpoint Service Centers | China Mobile / China Unicom / China Telecom stores near checkpoints like Luohu and Futian | Get it on the spot and use it immediately — the most straightforward option |
| City Service Centers | Telecom carrier stores across Shenzhen | More choices, and you can take your time comparing |
| Hong Kong "One Card, Two Numbers" | Apply for a Mainland secondary number through Hong Kong carriers (CMHK, csl, etc.) | No need to cross the border to apply, but monthly fees are higher |
Remember to bring: your original Home Return Permit (plus a photocopy — some service centers require it). Real-name registration is a legal requirement in Mainland China, so you must apply in person.
Which Plan Is the Best Value? Tips for Choosing a Card
If you only head north for weekend shopping and dining, you don't really need a high-cost monthly plan. Here are a few things to keep in mind when choosing a card:
- Keep the monthly fee low: Some plans now cost only around ¥8 per month, which is enough just to "keep your number active"
- Data allowance: If you mainly rely on Hong Kong data roaming, your Mainland card is mostly for receiving SMS verification codes, so a basic plan is sufficient
- Calling: If you occasionally need to call for ride-hailing or reservations, choose a plan that includes a small number of call minutes
- Number portability: If you want to switch carriers later, you can keep your Mainland number (number portability is available)
A quick reminder: carriers frequently run promotions, so the actual monthly fee depends on the carrier's quoted price on the day. Before signing up, ask whether there are any new-subscriber discounts or a free first month.
Where Can You Apply on the Spot at Border Checkpoints?
The most convenient approach is to apply at a carrier store near the checkpoint right after crossing the border:
- Luohu Checkpoint: China Unicom and China Mobile stores are located around the joint inspection building — apply right after crossing
- Futian Checkpoint / Futian Station: China Mobile stores are nearby
- Shenzhen Bay Checkpoint: There are carrier service points in the checkpoint commercial area (be sure to check their opening hours)
⚠️ Carrier store hours don't always match checkpoint opening hours, so it's best to check the store's business hours online before you go, or cross the border during the day to apply.
Money-Saving Tips for Keeping Your Number Active
If you've gotten a Mainland number but don't cross the border often, the biggest concern is wasting money on monthly fees. Here's how to save:
- Switch to the cheapest plan: Some carriers offer a ¥8-per-month "number retention plan" that's only for receiving SMS
- Watch out for auto-debit: Link your WeChat Pay / Alipay for automatic monthly fee deductions to avoid your number being suspended for non-payment (numbers suspended for an extended period may be cancelled)
- Keep your real-name info updated: If you've renewed your Home Return Permit, remember to update your real-name registration at the carrier store
— Compiled by the HKSZ Life Editorial Team, your guide to cross-border living. Information is subject to the latest official announcements.
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