When the QR code won't scan and the queue is watching, you need calm phrases and a fallback plan. Here's what to say at the till, plus cash and card backups.
When your payment fails, the fastest fix is a short script: show the screen, say 不好意思，我的付款没成功。 (Bù hǎoyìsi, wǒ de fùkuǎn méi chénggōng.) — Sorry, my payment didn't go through. Then ask 可以再试一次吗？ (Kěyǐ zài shì yī cì ma?) — Can we try again? If that fails, say 我可以用现金吗？ (Wǒ kěyǐ yòng xiànjīn ma?) — Can I use cash? Keep your phone visible and your voice calm. Most cashiers have seen this before and will help if you give them a clear next step.
First: name the problem without panic
You do not need to explain why the payment failed. You need the cashier to understand that it failed and that you are ready to try something else. Start with the sentence above. If you want to be more specific, add 扫不了。 (Sǎo bù liǎo.) — It won't scan. Or 付不了。 (Fù bù liǎo.) — I can't pay. These are short, common, and easy to hear over shop noise.
If the screen shows an error you do not understand, do not guess. Point to it and say 这个我看不懂。 (Zhège wǒ kàn bù dǒng.) — I don't understand this. Then ask 可以帮我看看吗？ (Kěyǐ bāng wǒ kàn kan ma?) — Can you help me take a look? Handing over your phone is not always expected; holding it up so they can read the screen is usually enough.
When the scanner fails but the card is fine
Sometimes the QR code will not scan because of glare, a cracked screen, or a dirty lens. Before you switch methods, try 可以再扫一次吗？ (Kěyǐ zài sǎo yī cì ma?) — Can you scan it again? If the cashier is using a handheld scanner, angle your phone slightly away from overhead lights. If that does not work, say 我换一张卡。 (Wǒ huàn yī zhāng kǎ.) — I'll switch to another card.
Foreign cards can fail for reasons the cashier cannot see: your bank may block the transaction, or the app may not accept that card type. You do not need to diagnose it at the till. Say 这张卡不行。 (Zhè zhāng kǎ bù xíng.) — This card doesn't work. Then ask 可以用现金吗？ (Kěyǐ yòng xiànjīn ma?) — Can I use cash? The official payment guide for overseas visitors notes that mobile payment options are expanding, but cash remains a legal fallback. Payment service guide for overseas visitors to China
The verification wall: when the app asks for more
New accounts sometimes hit a verification step at the worst moment. The app may ask for a passport photo, a selfie, or a Chinese phone number. If you are stuck on that screen, tell the cashier 我的账户要验证。 (Wǒ de zhànghù yào yànzhèng.) — My account needs verification. Then ask 可以等一下吗？ (Kěyǐ děng yīxià ma?) — Can you wait a moment? If the queue is long, step aside and say 我先弄一下。 (Wǒ xiān nòng yīxià.) — Let me sort this out first.
Do not try to finish verification while holding up the line. Most cashiers will let you step to the side. If you cannot complete it, fall back to cash or a physical card. The business expatriate guide reminds readers that setting up local payment tools may require identity checks, so it is worth doing this before you are at the till. A Guide to Working and Living in China as Business Expatriates (2025 Edition)
Asking for help without losing the queue
If you need the cashier to guide you, keep it short and directional. Say 可以教我怎么操作吗？ (Kěyǐ jiāo wǒ zěnme cāozuò ma?) — Can you help me do it? Or 我应该点哪里？ (Wǒ yīnggāi diǎn nǎlǐ?) — Where should I tap? If they point, repeat back what you see: 点这里，对吗？ (Diǎn zhèlǐ, duì ma?) — Tap here, right? This keeps the interaction moving and shows you are trying.
If the shop is busy, you can also ask 有没有别的付款方式？ (Yǒu méiyǒu bié de fùkuǎn fāngshì?) — Is there another way to pay? That opens the door to cash, a card reader, or a personal transfer. In smaller shops, the owner may prefer a personal QR code. If they show you one, confirm the amount before you scan: 是三十块，对吗？ (Shì sānshí kuài, duì ma?) — It's thirty yuan, right?
Branching dialogue: at a convenience store
You: 不好意思，我的付款没成功。 (Bù hǎoyìsi, wǒ de fùkuǎn méi chénggōng.) — Sorry, my payment didn't go through.
Cashier: Try again? (Zài shì yī cì?) — Try again?
You: 好，我再扫一次。 (Hǎo, wǒ zài sǎo yī cì.) — Okay, I'll scan again.
(The scan fails again.)
You: Still doesn't work. Can I use cash? (Háishì bù xíng. Kěyǐ yòng xiànjīn ma?)
Cashier: Yes, do you have small change? (Kěyǐ, nǐ yǒu língqián ma?) — Yes, do you have small change?
You: Yes, here you go. (Yǒu, gěi nǐ.) — Yes, here you go.
If you do not have cash, the branch changes: You: I don't have cash. Can I use a card? Cashier: We only take cash or mobile payment. You: Then I'll go withdraw money first. (Nà wǒ xiān qù qǔ qián.) — Then I'll go withdraw money first.
Cash, cards, and the limits of each
Cash can be a useful fallback, but it has friction. Some small shops may not keep enough change for a 100-yuan note. If you are paying a small amount, ask 能找开吗？ (Néng zhǎo kāi ma?) — Can you break this? If they cannot, try to pay with smaller notes or use a card if the shop accepts one.
Physical cards are less universal than mobile payment in many everyday shops. A hotel or larger chain may accept them; a street stall likely will not. If you want to try, ask 可以刷卡吗？ (Kěyǐ shuā kǎ ma?) — Can I use a card? If the answer is no, do not push. Switch to cash or ask where the nearest ATM is: 附近有取款机吗？ (Fùjìn yǒu qǔkuǎnjī ma?) — Is there an ATM nearby?
Your next three uses: a 7-day practice plan
Day 1: Say 不好意思，我的付款没成功。 (Bù hǎoyìsi, wǒ de fùkuǎn méi chénggōng.) out loud ten times. Record yourself once and listen for the tone on 没 (méi). Day 2: Practice 可以再试一次吗？ (Kěyǐ zài shì yī cì ma?) and 可以再扫一次吗？ (Kěyǐ zài sǎo yī cì ma?) until you can say them without reading. Day 3: Learn 我可以用现金吗？ (Wǒ kěyǐ yòng xiànjīn ma?) and 可以刷卡吗？ (Kěyǐ shuā kǎ ma?). Use them in a shop even if you pay by phone successfully—just ask as a drill.
Day 4: Practice the verification line 我的账户要验证。 (Wǒ de zhànghù yào yànzhèng.) and 可以等一下吗？ (Kěyǐ děng yīxià ma?). Day 5: Run the branching dialogue with a language partner or a recording. Take both roles. Day 6: Go to a small shop and buy one item with cash. Ask 能找开吗？ (Néng zhǎo kāi ma?) if you use a large note. Day 7: Review your notes and pick the three phrases you found hardest. Say each one five times before you leave home. The goal is not perfect grammar; it is a calm next sentence when the screen says no.