> ## Documentation Index
> Fetch the complete documentation index at: https://docs.incident.io/llms.txt
> Use this file to discover all available pages before exploring further.
# On-call in China
> How on-call notifications work for responders in Mainland China.
On-call in China is in early access. Speak to your account team to get set up.
Responders in Mainland China can receive pages via SMS, voice, and the Android and iOS apps.
We use **事件incidentio app** to refer to the mobile app distributed in Mainland China, and **incident.io app** for the one distributed everywhere else. The two are separate apps with separate setup — responders in Mainland China need the 事件incidentio app, not the incident.io app.
The mechanics of each channel are different enough that we've written separate guides for them:
* [Mobile app in China](/on-call/china-mobile-app) — why there's a separate app, which devices are supported, and what iOS can and can't do
* [SMS and voice in China](/on-call/china-sms-and-voice) — how messages are identified, how to add a Chinese phone number, and the channels that aren't available
## What's different
A quick orientation before you dig into the details:
* **The 事件incidentio app is a separate build** distributed through Chinese app stores rather than Google Play. Responders in Mainland China need to install this one — the incident.io app won't reliably deliver notifications inside Mainland China.
* **The iOS 事件incidentio app can't bypass silent mode.** We use Time Sensitive notifications, which bypass Focus modes but not silent mode. For high-urgency pages, recommend SMS or voice.
* **SMS messages don't come from a fixed number.** Chinese carriers assign a varying sender number per message, so users identify our SMS by a signature prefix in the message body — `【臻创互联】` — rather than by a saved contact.
* **Adding a Chinese phone number has an extra step.** Step 1 (adding the number) must happen from outside Mainland China. Step 2 (verifying it) can happen anywhere.
* **Live call routing isn't available** for Chinese numbers.
## On-call readiness in China
The available notification methods are different in Mainland China, so a single notification policy that covers everyone will misfit one group of responders. We recommend creating a separate [notification policy](/on-call/notification-policies) for Mainland China — and in particular, leaning on SMS and voice for high-urgency rules rather than push, since iOS can't reliably wake responders through the app there.
Scope the policy to your China responders using a catalog attribute — for example, filtering by Office:
[On-call readiness insights](/on-call/on-call-readiness-insights) shows which app each responder has installed, so you can confirm that responders in Mainland China are using the 事件incidentio app rather than the incident.io app — the most common foot-gun, and one we can't catch automatically.