Complete Guide to Wireless Screen Mirroring Connection Issues: Troubleshooting & Solutions from DLNA to Mirroring

Wireless screen mirroring technology is convenient, but problems may occasionally occur. Whether it’s DLNA casting or screen mirroring, this guide helps you quickly troubleshoot and resolve issues.

Issue 1: DLNA Cannot Find Devices

Cause 1: Devices on different networks

Solution: Ensure your mobile phone and TV are connected to the same Wi-Fi network, and confirm that device isolation is not enabled on the network (common in corporate/school networks).

Cause 2: DLNA not enabled on the device

Solution: Go to your TV’s “Multi-Screen Interaction” or “Media Sharing” settings, and turn on the relevant DLNA function.

Issue 2: Google Cast Connection Failed

Cause 1: Device offline

Solution: Check if devices like Chromecast are powered on and connected to the network. Ensure the device is within the effective Wi-Fi coverage area.

Cause 2: Outdated firmware

Solution: Update the Google Home APP to the latest version, and synchronously update the firmware of your Chromecast or Google Cast-supported device.

Issue 3: Screen Mirroring Lags or Has High Latency

Cause 1: Wi-Fi interference

Solution: Connect the wireless screen mirroring device to the 5G Hz Wi-Fi band (less prone to interference than 2.4G Hz). Keep the device away from interference sources such as microwaves and Bluetooth speakers.

Cause 2: Insufficient network bandwidth

Solution: Pause other devices’ download tasks or high-definition video playback to free up network bandwidth for screen mirroring.

Issue 4: Cannot Find Devices During Mirroring

Cause: Protocol mismatch

Solution: For Android phones, try using the Miracast protocol; for iPhones, you must use the AirPlay protocol. Confirm that the receiving device (TV/mirroring adapter) supports the corresponding protocol.

Universal Troubleshooting Rhyme

First check the network, then restart; protocol compatibility must be kept in mind.