If your phone and computer cannot see each other in KDE Connect, first open the app on both devices. Then check that they can communicate over the same local network, allow KDE Connect through the computer’s firewall, and try manual discovery. Reset configuration only if those checks fail. KDE’s pairing guidance says both devices should be on the same network and not blocked by a firewall: KDE Connect documentation.
1. Open KDE Connect on both devices
KDE Connect needs its phone app and desktop component running. Open KDE Connect on your phone and the KDE Connect interface on your computer, then give the devices a moment to appear in each other’s device lists. KDE’s pairing tip describes the basic flow: request pairing on either device and accept the prompt on the other. The example covers Android and KDE Plasma; controls may differ on iOS and Windows. KDE’s pairing tip.
- Open KDE Connect on the phone.
- Open KDE Connect on the computer.
- If the other device appears, select it and request pairing.
- Accept the pairing request on the other device.
If neither device appears in the other’s list, continue with the network checks before changing configuration.
2. Check that the network permits local device discovery
Put both devices on the same local network and check whether that network allows devices to communicate with one another. A guest Wi-Fi network, client isolation, or blocked UDP broadcast traffic can prevent automatic discovery even when both devices have internet access. KDE’s troubleshooting guidance specifically identifies blocked UDP broadcast packets as a possible cause. KDE Connect troubleshooting.
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- Confirm the phone and computer are connected to the same network, rather than one using a guest network or a different connection.
- If the router or access point has a client-isolation or guest-device setting, check whether it prevents local devices from communicating.
- If you are on a workplace, school, hotel, or public network, its administrator may restrict device-to-device traffic; changing KDE Connect settings will not override that network rule.
3. Allow KDE Connect through the computer’s firewall
KDE UserBase documents KDE Connect’s dynamic port range as 1714–1764 for both UDP and TCP. If the computer’s firewall is active, allow that range for both protocols in the appropriate network zone. The exact steps depend on the firewall software and your operating system; KDE’s documentation includes examples for UFW and firewalld. KDE Connect firewall guidance.
For firewalld, KDE cautions against using the public zone for KDE Connect. Choose a suitable trusted zone for your network and follow the documentation for your system rather than opening ports indiscriminately on public networks. KDE Connect firewall guidance.
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4. Try manual discovery if automatic discovery fails
If the network allows device-to-device communication but the devices still do not appear automatically, you can try adding the other device by its reachable IP address. On Android, KDE documents the option “Add devices by IP” on the app’s device screen. KDE desktop configuration also supports a customDevices list. KDE Connect manual discovery guidance.
- Find the other device’s IP address on its network connection settings.
- In the Android app’s device screen, choose “Add devices by IP” and enter the computer’s reachable address.
- If configuring discovery on the desktop, use KDE Connect’s
customDevicessetting with the reachable address. - Try pairing again and confirm that the address is reachable from the device where you entered it.
A manual address does not bypass a firewall or network isolation. If the devices cannot communicate over the local network, resolve that first.
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5. Reset KDE Connect configuration only as a last resort
If the network and firewall are configured correctly and pairing still fails or crashes, KDE suggests stopping the KDE Connect daemon and moving ~/.config/kdeconnect aside so KDE Connect can start with clean configuration. Preserve the existing folder as a backup before doing this: resetting configuration may remove saved settings and pairings. KDE also notes that corrupted configuration can cause crashes during pairing. KDE Connect configuration troubleshooting.
- Stop the KDE Connect daemon using the method appropriate for your desktop and system.
- Move
~/.config/kdeconnectto a backup location instead of deleting it. - Start KDE Connect again and attempt pairing with the clean configuration.
- If the reset does not help, restore the backup folder to recover the previous configuration.
When the symptom is specific to iOS
KDE UserBase documents iOS limitations: notification synchronization is unavailable, and the connection cannot be kept alive while the app is off-screen. If KDE Connect disconnects when backgrounded on an iPhone or iPad, that behavior may reflect the documented platform limitation rather than a misconfigured firewall. Platform controls are not identical across Android, iOS, Windows, and KDE Plasma. KDE Connect platform notes.
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