Help

When it won't work, narrow it down step by step.

Rather than trying to find the cause all at once, narrow it down in the order power → discovery → firewall → pairing → input & return and most issues get sorted out quickly.

Start with these two

Lost your cursor? → Press Ctrl+Alt+Backspace and the cursor returns to your own PC (center of the monitor).
Connected but input isn't working? → The Android Accessibility Service may have been turned off or restarted. Re-enable OneMouse under Accessibility.

Troubleshooting order

Check one step at a time, in this order.

Power and permissions

Make sure both the PC app and the Android app are running, and that the Android Accessibility Service is on. If you're blocked here, input won't work at all.

Same network & discovery

Check that the PC and phone are on the same Wi-Fi (same Wi-Fi router). If discovery fails, it's usually because they're on different networks or discovery is blocked.

Firewall & isolation

If the phone can see the PC but the PC can't see the phone, it may be a Windows firewall inbound issue (whether the network is set to "Public" or "Private"). Office and café Wi-Fi can also block it with client isolation.

Pairing & connection

Confirm that QR or 6-digit code pairing is finished and that the device shows as connected in Devices. Before pairing, the input and file channels don't open.

Input & return

Push the mouse toward the arranged edge to see if it crosses over; if it doesn't, check the arrangement. If the cursor ends up somewhere odd, bring it back with Ctrl+Alt+Backspace.

Transfer

When files and clipboard won't go through.

Confirm the selected device is correct — a transfer goes to the target you selected.
PC-to-PC drag requires the sub PC to be connected and arranged.
Keep holding the file, cross the arranged screen edge, and drop it on the target to start the transfer.
If the clipboard doesn't come through, check that both apps are connected and whether a screen is off and idle.
Bluetooth is slower than Wi-Fi — send large files over Wi-Fi.

Frequently asked questions

The most common problems.

It keeps disconnecting about every 10 seconds.

There are four common causes: ① client isolation on guest/office Wi-Fi, ② battery optimization cutting off the phone's background connection, ③ Windows firewall inbound blocking, and ④ Wi-Fi going into power-saving (sleep) when the screen turns off. Turn on the battery exception, allow OneMouse inbound in the firewall, and use a private Wi-Fi when possible.

The phone can see the PC, but the PC can't see the phone.

This is usually a Windows firewall inbound issue. If the current network is set to "Public", inbound may be blocked, so switch it to "Private" or allow OneMouse inbound in the firewall.

It works at home but not on office or café Wi-Fi.

Public/guest Wi-Fi often isolates device-to-device communication (client isolation) for security. In that case, devices can't find each other even on the same Wi-Fi. Use a Bluetooth connection or a personal hotspot.

It says connected, but the mouse and keyboard don't respond.

The Android Accessibility Service was most likely turned off or restarted by the system. Go to Android Settings → Accessibility and re-enable OneMouse.

The cursor is stuck on the phone/another PC and won't come back.

Press Ctrl+Alt+Backspace to force the cursor back to the center of your own PC's monitor.

The connection drops when the screen turns off.

When the screen turns off, the phone's Wi-Fi can go into power-saving or the app can go to sleep due to battery optimization. Setting OneMouse as a battery optimization exception on Android keeps it stable. Also check the keep-screen-on option while connected.

Remote screen control over Bluetooth doesn't work well.

Mobile remote screen control moves a lot of data, so it's not recommended over Bluetooth. Use Wi-Fi for remote control. Bluetooth is well suited to mouse, keyboard, clipboard, and files.

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