After days of tinkering, I figured out the solution. I will post here to hopefully aid other iPhone users. When using the SmartThings app, it would say to turn on Bluetooth by going to "Settings > Bluetooth." But that alone won't do it. There is another vital step that needs to happen to allow Bluetooth to work with the app: you must also go to "Settings > Privacy > Bluetooth" and allow the SmartThings app to utilize Bluetooth.
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I have a new Q90 QLED and a new Q70 soundbar. They seem to be working pretty well, except the TV won't recognize the soundbar after some Blu-rays are used. I am hoping that maybe it's a firmware issue with the soundbar, but I cannot get the soundbar to connect to the internet, and therefore cannot update its software. From what I can gather, the only way to update the software is to connect to the internet, which requires the use of the SmartThings app. However, when I try to add the device, it does not work. I keep getting an error, "Turn on Bluetooth" and "To add a device, you need to turn on Bluetooh in Settings > Bluetooth." But I do have Bluetooth on and in fact have been able to broadcast from my phone to the soundbar. Then, I see that some other instructions for other soundbars say to simply download the firmware and use a USB drive to update. When I went to do that, I realized that the USB port on the soundbar is a micro-USB, so it is not compatible with standard USB drives! I am getting quite frustrated... Any help would be greatly appreciated. Thanks!
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