Private Listening via IOS app and bluetooth earbuds
I have a Sharp Roku TV and an iphone 12 with the latest version of the Roku app. I can connect the phone app to the TV and use the remote in the app to turn on private listening. This allows me to listen to the TV thru my bluetooth earbuds. So far so good. Only problem is that the volume is very very low, even when the volume is turned all the way up on the phone. If I try turning up the volume on the TV remote, it just shows the headphone icon on the TV.
The volume is loud enough if I'm sitting on the couch watching, but if I'm exercising, I can't hear a thing. I've googled solutions and read everything in this community, but can't find the answer.