MHL device not recognized by the TV

MHL (Mobile High-Definition Link) links your devices with a cable to increase communication speed and also allow charging of your device. If your MHL device is not recognized by the TV, first confirm your device supports MHL, and then check that it is connected properly. If your MHL device connects but some apps don't work, there's an issue with MHL support on your device.

Confirm your mobile device supports MHL.

If your MHL device is not being recognized or has a "no signal" or "weak signal" message when it is connected to a TV with the MHL to HDMI adapter, it may not support MHL connection.

Visit MHL Devices to view all compatible devices and adapters.
Make sure the MHL device is connected to the MHL port on the TV.

Some Samsung TVs will have only one HDMI port that is labeled MHL. Make sure that your device is connected to the port labeled MHL using your MHL to HDMI adapter.
Reconnect the MHL connection at both ends.

Disconnect the MHL adapter from the device and the TV and reconnect it to establish a firm connection at both ends.
Set the TV to the correct source.

If your TV only has one MHL port it is usually HDMI 3, but varies by model. Make sure your TV is set to the correct source.
Try to display something else from your device.

If a picture, video, or other app can use the MHL connection and work with the connected device, then there is no issue with the TV, but there is a limitation with the MHL support on your device.
Replace the MHL cable.

If you're certain that your device is MHL compatible but nothing appears at all, try replacing the MHL cable.

Service is not required for this issue. If you still have issues, contact the manufacturer of the device.

Someone already registered this device error when adding TV or projector to SmartThings

If your TV, smart monitor, or projector is still registered to an older SmartThings account* or if you accidentally added it to the wrong account, you can easily reset it and transfer it. All you need to do is add the TV/projector to your new account and the SmartThings app will take care of the rest for you.

TV or projector does not show up during SmartThings discovery process

You can connect your TV, smart monitor, or projector to the SmartThings app without using a SmartThings Hub. If the app has trouble connecting or discovering your device, there are a few things you should check, like if Bluetooth is enabled on your phone. Then, you can try adding your TV/projector to the SmartThings app again. A Samsung Account and

Differences between the protective film and the polarizing film on your Samsung TV

Some TVs come with polarizing film on the screen that is part of the actual TV. Other TVs and smart monitors come with a scratch-resistant protective film to keep the TV from getting scratched during shipping. The key is to know which is which. Protective film should be removed after unpacking the TV, the polarizing film should not.

Samsung TV has no picture or a black screen

If your TV or Odyssey Ark gaming screen is turned on and is producing sound but has a black screen, the issue could be with your external device and not your TV. For instance, if your screen uses a One Connect Box, which allows you to connect multiple external devices, there are some troubleshooting steps you can take to solve the issue. If it isn'

TV or projector displays an error message

The TV, smart monitor, or projector may display the following error messages, mode not supported, no signal or weak signal, check signal cable, no time information, locked, or the HDCP has been compromised. Instructions for correcting the conditions that cause the screen to display each of these error messages are available in this guide.

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