LG Screen Share Not Working? Try These 22 Fixes

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LG Screen Share Not Working

Screen sharing on LG TV sometimes does not work for users. It is usually either that they are unable to connect the devices or the connection keeps breaking intermittently.

Before we delve into trying to fix the problem of screen sharing not working, you need to first confirm that you are setting up LG TV smart share using the best practices outlined below:

How to Screen Share on LG (If It Doesn’t Work, 22 Fixes Are Below)

For Android using Screen Share

1. Connect your phone and TV to the same WIFI

2. Press the input button on your TV remote control, or press the Home button your remote control and select Screen Share and leave it on the Screen Share window

3. Open Settings on your phone and select the Screen Mirroring or Screen Sharing option under Connection and Sharing

4. Select your LG TV to start sharing

For Android using Cable:

If you want to share your Android phone screen using a cable, then ensure that your phone supports either MHL (mobile high definition link) or SlimpPort (microUSB to HDMI output).

1. Check if your LG TV has the MHL Logo on the HDMI port.

2. If your TV does not have this logo or if you are using SlimPort, please use an adapter

3. Use an MHL compatible HDMI to MicroUSB cable to connect your phone to the TV

4. Switch the input on your TV to the HDMI source and start sharing

Screen Share on Windows PC

1. Connect your PC and LG TV to the same WIFI network

2. Press the input button on your remote control, or press the Home button your remote control and select Screen Share

3. Click the Windows button on your PC

4. Select Settings

5. Select Devices

6. Select Bluetooth and Other Devices

7. Select Add Device

8. Select Wireless Display

9. Select your LG TV

10. Set projection mode to Duplicate and start mirroring

For Android Using Bluetooth

This method is not recommended by LG. Bluetooth is ideal only if you want to share files. To share screen, you need to use WIFI or HDMI. Using Bluetooth will result in poor audio and video, as well as frequent connection breaks.

For iOS and Mac Using AirPlay

The LG TV series that support AirPlay include

  • 2018 webOS 4.0 OLED B8/C8/W8/Z8 and UHD UK Series and SK series
  • 2019 webOS 4.5 OLED B9/C9/W9/Z9 and UHD UM Series and SM Series
  • 2020 webOS 5.0 OLED BX/CX/GX/WX/ZX/RX and UHD UN Series and NANA Series

To Share Screen on iPhone

1. Turn on your LG TV

2. Press the Home button on the remote control

3. Select Home Dashboard

4. Select AirPlay

5. Select AirPlay again to turn it on

6. Select Require Code and click First Time Only if you only want to use a code the first time a device connects

7. Select Every Time if you want the device to use a code every time it connects

8. Connect your LG TV and your iPhone to the same WIFI network

9. On your phone, open the app you want to share and select the AirPlay icon

10. Select your LG TV to start playing on the TV

Screen Share on Mac

Your Mac and LG TV must support AirPlay 2. LG TVs that support AirPlay 2 are:

  • LG OLED (2018, 2019, 2020)
  • LG SuperUHD SK 9, 8 series (2018)
  • LG UHD UK 62 series or above, UK 7 series (2018)
  • LG NanoCell NANO 9, 8 series (2020)
  • LG UHD UN 8 series (2020)
  • LG UHD UN 71 series or above (2020)
  • LG NanoCell SM 9, 8 series (2019)
  • LG UHD UM 7, 6 series (2019)

To share screen from Mac using AirPlay 2:

1. Turn on your LG TV

2. Press the Home button on the remote control

3. Select Home Dashboard

4. Select AirPlay

5. Select AirPlay and HomeKit Settings

6. Select AirPlay to turn it on

7. Select Require Code and click First Time Only if you only want to use a code the first time a device connects

8. Select Every Time if you want the device to use a code every time it connects

9. Connect your LG TV and your iPhone to the same WIFI network

9. Go to the control centre on your Mac

10. Select Screen Mirroring

11. Select your TV name to connect

12. Select Mirror mode to duplicate the display. You could also select to use as a separate display.

The reason we have outlined all these setup details for screen sharing on LG TV is so you’re sure that your setup is correct before starting to troubleshoot why screen share is not working on LG TV.

After confirming this, please follow the steps below to fix the issue of screen share not working on LG TV.

Why Is LG Screen Share Not Working

1. Poor WIFI Connection

Although you do not need internet connection to do the actual sharing of your device screen onto your LG TV, you do need strong WIFI signals to establish and maintain the screen sharing connection.

This is because screen sharing requires the LG TV and your mobile device or PC to be on the same WIFI network to find each other and establish a consistent wireless connection throughout the sharing process.

Therefore, if both devices are connected to the same WIFI, or if one of the devices is not receiving sufficient WIFI signals, you will have issues trying to share the screen on your LG TV.

Fix – Ensure Both Devices Are On Same Network

One of the first things to do when screen sharing is failing on LG TV is to ensure that the TV and the sharing device are connected to the same WIFI network.

To check WIFI on LG TV:

1. Press the Home button on your remote control

2. Select Settings

3. Select Network

4. Select WIFI Connection. This will display the WIFI network your TV is connected to

To check WIFI connection on your Android phone:

1. Swipe down from the top of the screen

2. Press and hold the WIFI icon

3. The network you’re connected to will display at the top of the screen

To check WIFI connection on iPhone:

1. Select the Settings app

2. Select WIFI

3. The name of the network you’re connected to will display at the top with a tick next to it

To check WIFI connection on Windows

1. Click the WIFI icon on the task bar (bottom right)

2. The network you’re connected to will display with Connected written next to it

To check WIFI connection Mac

1. Select the WIFI icon from the menu bar (top right)

2. The WIFI you’re connected to will be displayed with a lock or blue circle next to it

Once you have confirmed that your LG TV and your sharing device are connected to the same network, try the screen sharing again and see if it works. If you are still having issues, please try the next fix.

Fix 2 – Restart WIFI on Phone or PC

Another reason why screen sharing is not working on LG TV is that the WIFI node on the phone or PC may have suffered a temporary glitch. This would cause it to:

1. Not discover your LG TV

2. Not discover your WIFI connection

3. Not initiate the sharing connection even after discovering your LG TV

4. Keep losing connection to the WIFI intermittently

The simplest way to fix this glitch is to restart the WIFI on the phone or PC

To restart WIFI on the phone:

1. Swipe down from the top of the screen and tap the WIFI icon once to turn it off

2. Tap the WIFI icon again to turn it back on. Then wait to see that it connects to the right WIFI

To restart on Windows

1. Click on the WIFI icon on the task bar (bottom right)

2. Click the blue WIFI bar at the bottom to turn WIFI off

3. Click it again to turn your WIFI back on and ensure that it’s connected to the right network

To restart on Mac:

1. Select the WIFI icon from the menu bar (top right)

2. Select Turn WIFI Off

3. Then select to turn it back on

Fix 3 – Restart Router

If, after restarting the WIFI on your sharing device, the sharing issue continues, you may want to check the router.

For a successful connection between the sharing device and the LG TV, the WIFI has to give off and maintain strong signals throughout the connection process.

Your router may have developed a software or hardware glitch that affects its ability to transmit radio signals properly and this would cause the screen sharing to not work.

To resolve such glitch on your router, please use the steps below:

1. Switch off the router at the wall outlet, then unplug it

2. Wait 2 minutes

3. Plug it back in and switch it on

4. Wait for the router to finish initializing, then retry the screen mirroring setup

Fix 4 – Reset Router

The final solution to try when resolving a network issue with screen sharing is to reset the router. If you confirm that the router is not able to connect your devices, it may be that it developed a bug; you would need a reset to fix a router software bug.

Please note that resetting the router will remove any customizations you may have done on the router settings. This includes WIFI password, SSID, DNS servers, and so on.

To reset your touter:

1. Make sure that your router is plugged in and power is not interrupted throughout the process

2. Look at the back of your router and find the Reset button (or hole)

3. Use a paperclip to press and hold the reset button for 30 seconds, then release the button

4. Wait for the router to power back on and completely initialize

After resetting your router, you need to set it up again, then reconnect your devices to the WIFI. Afterwards, check if you can share your screen on LG TV.

2. Issue with Device (iPhone, Android, PC)

What we have done so far is to eliminate the WIFI connection as the possible cause of the issue of screen sharing not working on your LG TV. The next thing to check is the sharing device. That is, your phone, tablet, or PC.

Being the source device, if there is a glitch or bug on your mobile device or PC, it will not be able to mirror its screen on another device. Fixing such issues also requires an ordered, step-by-step process.

Fix – Restart Screen Share App

Screen Share is an application on your device. And, just like any other application, it can have a temporary malfunction which causes screen sharing to not work. This could result in your not being able to set up the screen sharing or in the sharing going off from time to time.

To fix this, you need to restart the screen share app on your device and try again. To restart screen sharing on mobile device

1. Exit the screen share app or window

2. Swipe it away from recent items

3. Open the app again to retry the sharing

To restart screen sharing on Mac

1. With the screen sharing window open, press Option+Command+Esc together

2. Then reopen the window to restart the sharing process

If after restarting the screen sharing app the issue persists, then try the next fix below.

Fix 2 – Clear App’s Cache

If you are using a dedicated screen sharing app, or if you are trying to share a particular app on your LG TV screen, the issue of screen share not working may be because the app’s cache memory is corrupt or full.

The cache memory stores data from your use of the app so that you can access features on the app quickly every time you load it. If this memory becomes corrupt, the app will not load or function properly and so would malfunction.

To clear the cache on Android OS:

1. Press and hold the app for a full second

2. Select App Info

3. Select Clear data

4. Select Clear Cache

5. Select Clear Cache again

To clear cache on iOS:

1. Navigate to Settings on your device

2. Select General

3. Select iPhone Storage

4. Select the app

5 .Select Offload app

6. Confirm the action

7. Select Reinstall app

Then open the app again and retry sharing to your LG TV screen.

Fix 3 – Restart Device

If the issue is not with the app’s cache memory, then it’s possible that your sharing device itself is experiencing a glitch. In that case, you would need to restart the device to get it working properly again and start sharing on your LG TV screen.

When restarting your device to resolve a glitch or bug, we always advise to use a full shutdown rather than the restart function. This allows your device to fully offload all the programmes that may have become corrupt and caused the glitch on the system.

Fix 4 – Force Restart

If you are having difficulty restarting your device, then you should try a forced restart. In fact, even if your device can shut down normally, sometimes a forced restart will force-close corrupt programmes that may not close otherwise.

To force restart Android OS:

1. Press and hold the power and volume down (-) volumes simultaneously for about 7 seconds

2. Your Android phone will restart

To force restart iPhone with Face ID, iPhone 8, and iPhone SE Gen 2 and later:

1. Press and quickly release the volume up (+) button

2. Then press and quickly release the volume down (-) button

3. Then, press and hold the side button until the Apple logo appears

4. Please do these in quick succession or the sequence will break.

To force restart iPhone 7

1. Press and hold the volume down button and the Sleep/Wake button simultaneously

2. Hold until the Apple logo appears, then release them

To force restart iPhone 6s and iPhone SE Gen 1

1. Press and hold the Sleep/Wake button and the Home button simultaneously

2. Hold until the Apple logo appears, then release them

To force restart MacBook and Windows PC

1. Press and hold the power button until your laptop completely shuts down

2. Wait one minute, then press the power button to power it back on.

Fix 5 – Disable Your Firewall on PC

When you are trying to share screen from your PC to your LG TV, your PC would have to call on some security protocols in order to establish the connection.

If you have firewall activated on your PC, it may see the screen sharing attempt as a security breach and prevent it.

To test, disable the firewall on your PC and see if you can share your screen to your LG TV. If the issue persists, please enable your firewall again.

The method to disable firewall depends on the kind of firewall you’re using. If you are using Windows firewall on your Pc, then disable it using these steps:

1. Click the Windows button on your PC

2. Type Control Panel and select it from the results

3. Select System and Security

4. Select Windows Defender Firewall

5. On the left, select Turn Windows Defender Firewall On or Off

6. Select to Turn off Windows Defender Firewall

To turn off firewall on MacOS 10.6:

1. Click the Apple icon from the menu bar

2. Select System Preferences

3. Select View, then select Security

4. Click on the Firewall tab

5. Click Stop to disable firewall

For 10.5, at the Firewall tab, select Allow All Incoming Connections to Disable Firewall

Fix 6- Check if the Device is Compatible

Another factor to consider when troubleshooting the issue of screen share not working on LG TV, is compatibility. If your sharing device does not support screen mirroring, it will not work on LG TV.

Also, if you are trying to use AirPlay, then refer to the requirements guide at the start of this article to know which LG TV versions are compatible. And, if your LG TV is not a smart TV, it will not support screen mirroring unless you use a third-party device.

Fix 7 – Turn off Bluetooth

We already stated that Bluetooth is best used for file sharing and not screen sharing on LG TV. If your Bluetooth is turned on, it may interfere with the WIFI-Direct signals required to share your screen. Therefore, you need to turn off the Bluetooth on your device at least to test and see if that’s the problem.

Fix 8 – Use HDMI Cable

At the start of this article, we also provided steps for using cable to share your screen from your Android phone. If you are trying to share from your PC, you could use an HDMI cable instead. Please note that LG TV does not support using ethernet cable for screen sharing. Ethernet cables are only meant for network connections and diagnostics.

Please follow the steps below to share your PC screen on LG TV using an HDMI cable:

1. Turn off your LG TV

2. Make sure that your PC has an HDMI port

3. If it does not, you could purchase an adapter called Video to HDMI or Output to HDMI (USB-C works for this)

4. Ensure that there is enough cable to connect your LG TV to your PC with enough slack left. However, do not use a cable that is more than 40ft long

5. Plug one end of the cable into your TV and the other into your PC

6. Now, turn on your LG TV

7. Press the Input button to switch input source

8. Select the HDMI source that you plugged the cable into. (If the TV has more than one HDMI ports, they should be numbered. So, select the corresponding number on the screen)

9. Your PC should now be mirrored on your LG TV screen

Test the connection by playing a video or audio. Sometimes, you may notice that the sound is still coming from the PC. In that case, you need to head back to your PC and implement some changes:

1. Click the Windows button on your PC

2. Enter Sound Settings and select it from the results

3. Under Output, select Choose Where To Play Sound

4. Select your LG TV and select OK

Fix 9 – Use Chromecast

Another alternative to using cables or the screen sharing app is to use Chromecast. This is best for iPhones where the LG TV does not support AirPLay.

To set up Chromecast, please follow these steps:

1. Purchase the Google Chromecast device

2. Plug the Chromecast HDMI cable into the HDMI port on your LG TV

3. Plug the USB cable into the charging dock of your Chromecast, and connect the charging dock to a wall socket

4. Turn on your LG TV and select the HDMI input source

5. Download the Google Home app onto your iPhone

6. Sign in with your Google account and complete the prompts

7. Then, go to the Home screen of the Google Home app and click the plus icon +

8. Select Set Up Device

9. Select New Device. The app will search for your Chromecast device.

10. Select your WIFI SSID and enter the password if prompted. You need to ensure that you enter the details of the same WIFI that your smartphone and TV are connected to

After setting this up:

1. Open the Google Home app in the list of apps on your iPhone

2. Select the Media icon

3. In the Manage Your System section, select which media you want to access: Music, Video, or Radio

4. If you select Video, for example, you will be presented with a list of possible video sources on your phone.

5. Select Link under the apps you want to share onto your LG TV via Chromecast

6. If you selected a streaming service such as Netflix, you would be prompted to Link Account and sign into your Netflix account

7. Then, exit Google Home

8. Open media from the app you just selected to share on your LG TV screen

9. You will see the Chromecast casting icon usually between AirPlay and Settings. Select the Chromecast icon

10. Select your Chromecast device from the list that appears and begin sharing on your LG TV screen.

Fix 10 – Use a Different Screen Mirroring App

At this point, you may have noticed that LG TV has better support for Android OS and Windows PC than for iOS and Mac. With Android OS, using the screen share app on the TV and on the phone works seamlessly.

On iOS, the process is not straightforward. You have to use AirPlay on LG TVs that support AirPlay, or use Chromecast to share your screen. If you do not have access to a Chromecast device, you could use a third-party screen sharing app.

LG TV does not officially recommend any third-party apps. We will however recommend Screen Mirroring – TV Cast from Apple.

3. TV Glitch

After checking the connection and the sharing source device, it is time to examine the LG TV for possible glitches or bugs that may be causing screen share to not work.

Fix – Restart TV

The first step to take is to do a soft restart of the TV. This will usually eliminate minor glitches on the TV that may be causing screen share to not work.

To perform a soft restart:

1. Press and hold the Volume Down (-) and Power buttons simultaneously

2. Hold until the TV powers off and powers back on to display the LG logo, then release

Fix 2 – Cold Restart TV

If the soft restart above does not clear the issue, then try a cold restart. To perform a cold restart:

1. With the TV still on, unplug it from power supply

2. Wait one minute

3. Then plug it back in.

If this doesn’t resolve the screen sharing issue, please try the next fix.

Fix 3 – Reset TV

Resetting the TV is a bit of an extreme measure, but it is sometimes necessary. Sometimes, changes made to the TV settings over time or some acquired bugs may be preventing screen share from working on your LG TV.

To reset your LG TV and make sure your LG TV is properly set up:

1. Press the Home button on your remote control

2. Select Settings

3. Select General

4. Select Reset to Initial Settings

5. On the setup page, enter your language and country

6. Select your correct location

7. On the next page, please make sure to select Home for the first question. Then complete the rest of the setup with the correct data

4. OS Out of Date

Another reason, in fact one of the main reasons why screen sharing may not work on LG TV is that the OS is out of date.

LG is continually making improvements to screen sharing its capabilities and support for different devices. If your TV does not have the latest updates, it may not have the features needed to support seamless screen share.

Fix – Update Firmware For TV and Device

To update webOS:

1. Press the Home button on your remote control

2. Select Settings

3. Select All Settings

4. Select General

5. Scroll towards the bottom of the screen and select About this TV

6. Toggle to turn on automatic updates if it is off

7. Then select Check For Updates

8. Follow the on-screen instructions to install the updates

For Netcast:

1. Press the Home button on your remote control

2. Select Settings

3. Go to the Others tab and select Software Update

4. Turn on Software Update

5. Select the box to automatically download and install updates

6. Click on Check Update Version

7. Click on Update (if there is one available)

Please ensure that your TV is not powered off during the entire update process

5. Source or Input is Set to HDMI

If you refer to the set-up guide at the start of the article, you would observe that for android and Windows PC, the TV source was set to Screen Share. If you do not set this, the screen share feature will not be activated on your LG TV, and will not work.

Fix – Change it to Mirroring or Wireless Screen Sharing

1. Press the input button on your remote control, or press the Home button your remote control and select Screen Share

If you do not want to always come back to this screen when you want to set up a share request then:

1. Select Listening Mode on the same screen share window and turn it on

6. Too Many Devices Paired to LG Screen Sharing

Having too many devices paired to your LG TV for screen sharing could bug down the screen share app make it unable to accept new screen share requests. It is good practice to do some housecleaning from time to time on your LG TV screen share app, by deleting your pairing history.

Fix – Delete Pairing History

1. Press the input button on your remote control, or press the Home button your remote control and select Screen Share

2. Select Delete Pairing History

Then try to set up screen share for your current device.

Briley is a freelance writer and has been writing for over 10 years. The former journalist now content writer currently writes for Techzillo and focuses on consumer tech in general. His main interests include video games and consumer technology. He also writes for websites such as Lifewire, and Digital Trends. Read our Editorial Guidlines and Fact Checking process.

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