Last checked: 2026-06-09 Source links listed below Auto-reviewed with fresh traveler evidence and kept aligned with the current guide path
Keep the original number reachable, set up app-based approvals before travel, and avoid payment paths that depend only on SMS once you are already at a counter.
Your bank, card issuer, or payment app sends a code to your home number, but the SMS does not arrive in China. A payment or login may be blocked.
Turn on roaming for the home number if needed for SMS.
Install and log in to the bank app before departure.
Add app-based approval or backup codes where supported.
Bring a second card from another issuer.
Keep a cash reserve for payment failures.
Check whether the home SIM is active and selected for SMS.
Move to a place with better signal before requesting another code.
Use bank-app push approval if available.
Check email or authenticator alternatives.
Call bank support only from a secure setting, not a checkout line.
Use another payment method if the purchase is urgent.
Watch for these signals:
SMS never arrives after a cooldown.
The bank blocks foreign roaming SMS.
The payment page times out waiting for approval.
You cannot log in to the bank app after arrival.
The payment is time-sensitive.
You have requested two codes without success.
Another payment method is available.
Use a different card already approved.
Use Alipay or WeChat Pay if they do not require a new bank challenge.
Use cash for small transactions.
Contact the bank from the hotel before trying again.
Do not assume SMS works just because data works.
Do not remove the home SIM if it receives bank codes.
Do not rely on one bank for all China payments.
Auto-reviewed on 2026-06-09 against newly collected traveler evidence.
1 verified traveler evidence rows matched the scenario.
Top matched evidence priority was 24; threshold is 24.
The linked guide page includes a short answer section.
The linked guide page exposes 3 source links.
3 deep-read solution source snapshots were collected for this scenario.
3 deep-read official/platform solution source snapshots were collected for this scenario.
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