Why can’t I cast the screen to the TV?
In recent years, screen projection technology has become a common way for users to project content from mobile phones, computers and other devices onto TVs. However, many users reported that they encountered problems with screencasting during operation. This article will start from hot topics and hot content in the past 10 days, analyze common reasons and solutions for screencasting failures, and provide structured data for reference.
1. Summary of popular screen casting issues in the past 10 days
| Question type | frequency of occurrence | Main equipment |
|---|---|---|
| Device is not compatible | 35% | Old TV, non-smart TV |
| Network connection abnormality | 28% | Weak Wi-Fi signal and router setting issues |
| Software version is too low | 20% | The mobile phone system has not been updated and the screencasting APP version is old. |
| Screencast protocol is not supported | 12% | DLNA/Miracast/AirPlay protocol missing |
| other reasons | 5% | Hardware failure, permissions not enabled |
2. Common reasons and solutions for screencasting failure
1. Device compatibility issues
If the TV model is older or not a smart TV, it may not support mainstream screencasting protocols (such as AirPlay or Miracast). Solution: Purchase a third-party screen mirroring device (such as a TV box) or replace a TV that supports screen mirroring.
2. Abnormal network connection
For screencasting, make sure your phone and TV are in the same local area network. If the Wi-Fi signal is weak or the router is configured with an isolation function, screencasting may fail. Solution: Restart your router, turn off device isolation, or use a wired connection.
3. The software version is too low
If the mobile phone system or screencasting APP version is too low, it may cause missing functions. Solution: Update the system to the latest version, or change to a third-party screencasting tool (such as Lebo Screencasting).
4. Screencasting protocol is not supported
Devices of different brands may support different screen mirroring protocols. For example, Apple devices require AirPlay, and Android devices require Miracast. Solution: Confirm the protocols supported by the TV, or use a more compatible APP (such as DLNA).
3. Comparison of popular screen casting tools
| Tool name | Support agreement | Applicable equipment | Advantages |
|---|---|---|---|
| AirPlay | Apple only | iPhone/iPad/Mac | Low latency, high image quality |
| Miracast | universal protocol | Android phone/Windows computer | No internet required |
| LeBo screen casting | Multi-protocol compatible | All platforms | Supports older TVs |
| DLNA | Streaming media push | Smart TV/Box | High stability |
4. Answers to users’ high-frequency questions
Q1: Why can’t the mobile phone find the TV device?
Possible reasons: The TV screen projection function is not turned on, and the network is in different frequency bands (such as 2.4G/5G mixed use). Solution steps: Check the TV screen mirroring settings and ensure that the device is connected to Wi-Fi in the same frequency band.
Q2: What should I do if the screen freezes after casting?
Possible reasons: Insufficient network bandwidth or low device performance. Solution steps: Turn off other devices occupying the network, or reduce the screen projection resolution.
Q3: The sound cannot be synchronized during screencasting?
Possible cause: Audio protocol mismatch. Solution steps: Switch the audio output mode (such as Bluetooth/HDMI) in the phone settings.
5. Summary
Casting failures are usually caused by device, network, or software issues. Users can solve the problem by updating the system, checking the network configuration, or using third-party tools. If the problem persists, it is recommended to contact the equipment manufacturer for technical support.
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