Hi again,
I posted previously in this thread about my wife’s problem with her Jabra Enhance Pro HAs and the treble/mid/bass controls jumping around randomly. We contacted Jabra/Resound tech support directly and they didn’t acknowledge any known solution to this problem. In addition to this problem, we were also encountering extreme battery drain in all her mobile devices (iPhone, iPads (2), and Apple Watch. The iPhone and Apple Watch would need recharge after about 8-12 hours (or less). Prior to the latest mobile releases (eg. iOS 15.4.x) things were working fine with the HAs, Jabra app, and mobile devices. Only after updating to the latest releases did we encounter these problems. We even installed the latest beta iOS 15.5 software on her iPhone to see if that made a difference with no success.
Finally, out of desperation, we tried removing the HA instances from the 2 iPad devices since we had also installed the Jabra apps on those for use when upstairs in the evening and iPhone was downstairs recharging. Using the previous iOS software we could turn off Bluetooth on the unused devices and the HA software on the single bluetooth active mobile device worked fine, but not after the latest mobile iOS software updates.
After removing the HA instances on the 2 iPads so the only HA instance was on the iPhone, everything started working correctly again. The treble/mid/bass controls stopped jumping around and the battery drain on all the mobile devices returned to normal levels. We are now on the 3rd day of normal operation, so we think the problem is now resolved.
Apparently having the HA instances on more than 1 mobile device seemed to cause these problems. If anyone else encounters the above problems with multiple HA instances on mobile devices you might want to try what we did.
Good Luck!
pruthe