To disconnect your hearing aids: On your iPhone, go to settings, click on Blue Tooth, in the list of devices, you should see your Oticons, listed and “Connected”, then you’ll see an “i” with a circle around it on the right edge. Click that “i” and you’ll get a new panel with option to “Disconnect” or “Forget this device”. Cick “Disconnect”
The three options that the other responder were referring to come up whenever you receive a phone call with a device connected. You first “Accept” the call, then you will have options on the screen, one of which is “Audio”. If you click on “Audio”, then you’ll see your three options (iPhone, Speaker, or Bluetooth).
Simply “Disconnecting” through Settings/Bluetooth does not unpaired the phone from the earpieces. When you want them back online, just go back to Settings/Bluetooth, and click the Oticon line again to reconnect.