> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.kodelabs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FDD on mobile

> Choose the right FDD screen on mobile for live triage, grouped incidents, historical analytics, or fault lifecycle metrics.

<Tooltip tip="Fault Detection and Diagnostics monitors equipment and surfaces operational issues in real time.">FDD</Tooltip> finds equipment problems from sensor data and rules, not only from simple instantaneous alarms. On mobile, FDD uses two building apps that match [FDD](/products/fdd/overview) on the web:

* `FDD Events` — live events, grouped incidents, and analytics dashboards
* `FDD Faults` — fault records for a rule on a device over time

## Which screen should you open?

| Screen                                                                    | Use when you need to…                                         | Example                                                                |
| ------------------------------------------------------------------------- | ------------------------------------------------------------- | ---------------------------------------------------------------------- |
| [Events list](/products/mobile-app/events/work-with-events)               | Triage live events, filter, and acknowledge                   | “This VAV just went into damper fully open—who owns it?”               |
| [Incidents](/products/mobile-app/events/work-with-events#incidents-list)  | See many related events as one issue                          | “Six FCUs on Floor 1 share the same cooling problem.”                  |
| [Event dashboards](/products/mobile-app/events/customize-event-dashboard) | Review open load or period trends with KPI cards              | “How many high-priority events are open right now?”                    |
| [Manage faults](/products/mobile-app/diagnostics/manage-fdd-faults)       | Inspect cost, occurrences, solutions, and long-running faults | “Has this temperature-greater-than-setpoint fault been open for days?” |

**Events** are individual findings in the stream. **Incidents** group related events under one ID. **Faults** summarize how often a routine fires on a device and how long it stays open.

```mermaid actions={false} theme={"theme":{"light":"github-dark","dark":"github-dark"}}
---
config:
  theme: neutral
  layout: dagre
---
flowchart TB
  FDDEvents["FDD Events app"]
  FDDFaults["FDD Faults app"]
  FDDEvents --> Events["List: Events / Active"]
  FDDEvents --> Incidents["List: Incidents"]
  FDDEvents --> Historical["Historical + dashboards"]
  FDDFaults --> FaultViews["Faults / Device / Routine"]
  FDDFaults --> FaultDetail["Fault detail + trends"]

  classDef Sky stroke-width:1px,stroke:#374D7C,fill:#E2EBFF,color:#374D7C
  class FDDEvents,FDDFaults,Events,Incidents,Historical,FaultViews,FaultDetail Sky
```

## Portfolio context

Historical dashboards may show a `Portfolio` sheet when you are scoped to all sites. Select `All Sites` to change portfolio filters, or `Switch Site` in building modules to focus on one property.

## What stays on the web

| Task                           | Platform                                                           |
| ------------------------------ | ------------------------------------------------------------------ |
| Routine authoring              | Web                                                                |
| Notification policies          | Web                                                                |
| Configuration and domains      | Web                                                                |
| Full work order administration | Web (mobile can create limited work orders from events and faults) |

## Next steps

<CardGroup cols={2}>
  <Card title="Events on mobile" icon="bell" href="/products/mobile-app/events/work-with-events" arrow={true}>
    Filter, acknowledge, and investigate events.
  </Card>

  <Card title="Event dashboards" icon="layout-grid" href="/products/mobile-app/events/customize-event-dashboard" arrow={true}>
    Review Active and Historical FDD KPIs.
  </Card>

  <Card title="Manage FDD faults" icon="wrench" href="/products/mobile-app/diagnostics/manage-fdd-faults" arrow={true}>
    Inspect fault lifecycle metrics and trends.
  </Card>
</CardGroup>