Thank you for contacting Oticon, we apologize for the delay in responding to your email. Before determining if it’s the Oticon ON App, you can pair your OPN hearing aids directly to the iPhone and not install the Oticon ON App. The OPN hearing aids are MFI (Made for iPhone) and the iPhone can be used without the ON app to make calls and stream media/audio.
Attached is the latest guide for connecting OPN hearing aids to the iPhone. I suggest removing the ON app, un-pair the devices, turn off/on phone, and then start from scratch. Please be aware when pairing your OPN hearing aids to your iPhone, it’s recommend to use new batteries (not rechargeable) to pair to your aids to your phone. From the latest guide that I’ve attached, follow pages 4 – 7 to pair your OPN hearing aids to your iPhone, do NOT install the Oticon ON app at this time. Verify if your connection remains between your OPN hearing aids and iPhone, if it does, then install the Oticon ON App. Verify if the connection remains or disconnects while using the Oticon ON app, or are you remaining paired to your iPhone but being disconnected from the app only?
Here are a couple of web links that will also provide some assistance, but I’ve included my direct line if you need further assistance:
OPN Instructional Videos: YouTube
Oticon Quick Guide for Re-pairing OPN hearing aids: https://www.oticon.com/-/media/oticon-us/main/download-center/opn-wireless-connectivity/ifu/15555-10092-opn-re-pairing-guide.pdf
If you have any other questions or need further assistance, please feel free to contact me directly.
Have a wonderful day!
End User Support Special