Just tried to pair MFi (Made For iPhone) Bluetooth hearing aids with an iPhone 6 running iOS 9 Beta 1. They show up in the device list under settings/general/accessibility/hearing aids, as expected, but the iOS controls for hearing aid volume etc. are not displayed. Looks like they are "halfway paired". To the vendor supplied app ("Kirkland Signature Choice"), the hearing instruments are not present. This all worked as expected in iOS 8. Anybody with insight into this? All the other Bluetooth devices I previously had paired under iOS 8 appear to wotk fine. The only apparent issue is with the Bluetooth hearing aids, Of course, they are paired under the accessibility menu rather than the Bluetooth menu.
Pairing MFi Hearing Aids broken?
same probelm with Beta 3
I would encourage you to submit a bug report on the pairing issue. They thought they fixed it with beta 3 but not so...