# Device Check

> Check device connection, ADB status, and device info. Use before starting automation, when connection issues occur, or when user asks about device status.

- Skill: `sheng1111/device-check` (Agent Skill)
- Install (CLI): `npx skillmds@latest add sheng1111/device-check`
- Raw SKILL.md: https://api.skillmd.com/api/skills/sheng1111/device-check/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: sheng1111 (https://skillmd.com/u/sheng1111)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/sheng1111/device-check

---


# Device Check Skill

Verify device connectivity and readiness before automation tasks.

## When to Use This Skill

- Before starting any automation workflow
- When encountering connection errors
- When user asks "Is my device connected?"
- After device disconnection/reconnection

## Quick Check

```bash
adb devices
```

| Status | Meaning |
|--------|---------|
| `device` | Ready |
| `unauthorized` | Accept prompt on device |
| `offline` | Run: `adb kill-server && adb start-server` |
| Empty | No device, check USB/debugging |

## Device Info

```bash
adb shell getprop ro.product.model
adb shell getprop ro.build.version.release
adb shell wm size
```

## Unicode Support Check

```bash
# MCP Unicode (DeviceKit)
adb shell pm list packages | grep mobilenext.devicekit

# Python Unicode (ADBKeyboard)
adb shell pm list packages | grep com.android.adbkeyboard
```

## MCP Verification

```
mobile_list_available_devices with arguments: { "noParams": {} }
```

**IMPORTANT**: This tool requires `noParams` empty object argument. Without it:
- `params/noParams must be object`
- `params must have required property 'noParams'`

## Troubleshooting

| Issue | Fix |
|-------|-----|
| No device | Enable USB debugging in Developer Options |
| Unauthorized | Accept USB debugging prompt on device |
| Offline | `adb kill-server && adb start-server` |
| Missing APKs | `adb install apk_tools/<apk>` |

## Report Format

```
Device: [Connected/Not Connected]
Model: [model]
Android: [version]
Screen: [WxH]
Unicode: DeviceKit [Y/N], ADBKeyboard [Y/N]
```