Before trying all the troubleshooting steps you find online, do this first:
Unplug your Roku device from both the power source and your TV. Wait five minutes, then plug it back in. This simple step was never mentioned anywhere—not even by Roku itself—but it’s the only thing that actually fixed the issue for me. It should be the first thing you try.
I recently set up a Roku Express+ 4K on my Vizio TV, and it worked perfectly out of the box. I enabled the Roku Mobile App on my phone to listen through Bluetooth earbuds, and it worked great for about 24 hours. Then, suddenly, the app stopped connecting and couldn’t find the device.
I tried everything:
Checked the IP address
Updated the Roku app on my phone
Rebooted both the TV and Roku device
Updated all software
Reset the Roku to factory settings
Nothing worked.
Update: I even adjusted my WiFi settings and followed every suggestion I could find—still no luck. Oddly enough, my Roku Express+ appears in my Roku account and shows up on my phone when using the mobile app, but the app’s remote refuses to connect or detect the device. It just doesn’t make sense.
