What to Do When Screen Mirroring Fails? A Complete Guide to Common Computer and Phone Screen Mirroring Problems
When using computer or phone screen mirroring, it’s inevitable to encounter problems such as failing to find a device, connection failures, or stuttering. Don’t worry, this article systematically organizes these common faults and their solutions, helping you quickly troubleshoot and resolve them.
Problem 1: Cannot Find Screen Mirroring Device
Cause Analysis:
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Devices are not on the same network.
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The receiver’s screen mirroring function is not enabled.
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The router’s “AP Isolation” feature is enabled.
Solutions:
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Confirm that your computer/phone and TV/projector are connected to the same Wi-Fi network.
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In the TV settings, enable “Wireless Screen Mirroring,” “Multi-Screen Interaction,” or “AirPlay” function.
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Log in to your router’s administration page and disable “AP Isolation” or “Guest Mode.”
Problem 2: Screen Mirroring Connects Successfully, but the Picture Stutters and Has High Latency
Cause Analysis: Insufficient network bandwidth or signal interference.
Solutions:
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Move devices closer to the router, or connect to the 5GHz Wi-Fi band.
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Pause high-traffic operations on your computer/phone (such as downloads, online videos).
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Restarting the router can significantly improve network quality.
Problem 3: Screen Mirroring Has Picture but No Sound
Cause Analysis: Output device is not correctly switched.
Solutions:
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Computer Screen Mirroring: Click the “Speaker” icon in the taskbar, and select the mirrored device as the default playback device.
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Phone Screen Mirroring: Usually, after a successful connection, the sound automatically switches to the TV. If it doesn’t, you can manually select it in the phone’s sound settings.
By troubleshooting according to the above checklist, most computer and phone screen mirroring problems can be resolved. If the problem persists, try restarting all devices; it’s often the last resort for stubborn issues.