Professional Troubleshooting Guide for Wireless Screen Mirroring Connection Issues
Various connection issues may arise when using wireless screen mirroring technology. Establishing a systematic troubleshooting approach enables quick identification and resolution of problems, ensuring the smooth progress of teaching and meetings.
1. Problem Classification System
Device Discovery Phase
- Unable to search for devices
- Incomplete device list
- Devices frequently disappearing from the list
Connection Establishment Phase
- Connection authentication failure
- Repeated disconnection and reconnection
- Protocol version mismatch
Data Transmission Phase
- Picture freezing and latency
- Audio-video desynchronization
- Resolution adaptation issues
2. Troubleshooting Process and Methods
Basic Environment Check
- Network connectivity test: Verify that the transmitting device (phone/computer) and receiving device (TV/projector) are on the same Wi-Fi network; check for router failures or network outages.
- Device distance and obstacles: Ensure the distance between devices is within 10 meters; remove thick walls, metal objects, or other obstacles that may block wireless signals.
- Interference source identification and elimination: Turn off or move away from high-interference devices such as microwaves, Bluetooth speakers, or other wireless transmitters.
Protocol Compatibility Verification
- Confirm supported protocols: Check whether the receiving device supports the protocol used by the transmitting device (e.g., Miracast for Windows, AirPlay for Apple).
- Software version check and update: Update the operating systems of both transmitting and receiving devices, as well as related apps (e.g., Google Home for Cast), to fix known bugs.
- Driver integrity check: For Windows computers, verify that the wireless network card driver is properly installed and updated to the latest version.
3. Typical Solutions
Miracast Issue Resolution
- Enable the Windows projection function: Press the Windows + K shortcut to open the projection panel and ensure the function is not disabled.
- Update the wireless network card driver: Download and install the latest driver from the official website of the network card manufacturer (e.g., Intel, Realtek).
- Check router settings: Disable “AP isolation” in the router management interface, as this function blocks direct communication between devices.
AirPlay Connection Optimization
- Ensure devices are logged into the same account: Sign in to the same Apple ID on both the Apple device (iPhone/iPad/Mac) and the receiving device (Apple TV).
- Check firewall settings: Temporarily turn off the system firewall or add AirPlay to the allowed list to avoid connection blocking.
- Verify device authentication status: For third-party devices supporting AirPlay, confirm they have completed Apple’s official certification to ensure stable compatibility.
Maintenance Recommendation: Establish a regular maintenance plan, keep device systems updated, and prepare emergency backup solutions (e.g., wired HDMI connections) for critical scenarios.