Practical Android networking

How to Find All Devices Connected to Your WiFi on Android

Use a local network scan to build a current list of reachable devices, then verify unfamiliar results before changing router settings.

Quick steps

1. Connect the phone to the WiFi network you want to inspect.
2. Run Network Scanner and wait for the local subnet scan to finish.
3. Compare IP addresses, host names, and vendor hints with devices you recognize.
4. Repeat the scan after waking sleeping devices or turning a suspected device off.

What the result means

A local scan tests addresses in the current subnet and combines reachable-host observations with details available to the phone. Devices can ignore probes or sleep, so a scan is a useful snapshot rather than a complete security inventory.

The network scanner discovers devices reachable on the local IPv4 network. It can help answer who is connected to a WiFi network and provide starting points for ping, port, and identification checks.

Troubleshooting

Repeat the test from the same network and preserve one variable at a time. Check basic reachability first, then move to the protocol-specific test. A single timeout is not enough to identify the failing component.

• Guest isolation can hide clients from one another.
• Sleeping phones and IoT devices may not answer every probe.
• A missing host name does not mean the device is suspicious.

Common mistakes

• Testing a device on another guest network or VLAN without a route.
• Assuming one scan is a permanent inventory rather than a point-in-time observation.
• Changing several router or device settings before retesting each change.

Use Network Toolkit

Open Network Scanner for Android for the detailed workflow, limitations, and related tools. Use diagnostics only on systems you own or administer.

Frequently asked questions