Samsung S90F - The Mobile Remote Control Does Not Work; External Devices Cannot be Operated with the TV Remote Control

The mobile remote control does not work.
If the TV cannot be controlled with the previously used mobile remote control, try the following methods:
• Reconnect the TV from the SmartThings app.
– If the TV is in an offline state in the mobile SmartThings app, use the offline device diagnosis function to
reconnect to the TV.
– If the connection still fails, delete and re-register the TV from the SmartThings app.
This function may not be supported depending on the model.
• Check that the TV power cable is plugged in properly.
– If the TV power cable is not plugged in properly, the mobile remote control will display an error message
and may not work.
• Use the mobile remote control close to the TV.
– The mobile remote control may not work if it is too distant from the TV.
• Scan the QR code on the screen.
– Press the power button at the bottom of the TV to turn it on, and scan the QR code on the screen to restart
the mobile remote control.
External devices cannot be operated with the TV remote control.
Check the cable connection between the TV and external devices.
When the symptom persists, set it manually in
left directional button Connected Devices Universal
remote setup.
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