i have experienced just what you say about Resound hearing aids (Prezia) having random movements of the bass and treble settings AND the running down of the battery on two iPhones. NOTE: The Resound app was loaded on both phones and my iPad. HOWEVER, although the apps were loaded on iPhone #2 and my iPad, the apps were not running. I only use the app with my hearing aids on iPhone #1. I just now deleted the Resound app from iPhone #2 and my iPad but how could the app have any influence if it is not running? Is this possible?

I should be able to see if there is any change tomorrow. For background, I noticed that for the past few days up until today, the two phones were not running down and the hearing aids were behaving normally. Then today it was back to the same problems again. Since you are a sw engineering, does this make any sense to you? Thanks. I’m going crazy.

With the update you may have to delete the app and reinstall. If this doesn’t work go to settings and accessibility. Select hearing aids and forget your current hearing aids. Open and close battery doors or place in charger and remove after 5 seconds. Allows Bluetooth to find your aids and pair. Open newly installed app and follow instructions. You may lose any custom programs but you can redo them.

With my Prezias, I have been experiencing the jumping frequencies for many months now. I have the app only on my iPhone 13. I constantly turn Bluetooth on and off many times a day to interact with the app and then to stop the jumping. I get no guidance from Resound or my rep at Costco who is also frustrated by this issue. I’m considering claiming a refund before my warranty expires in a couple of months. Pity because I like the Prezias and have many Resound accessories.

The title of the thread is iOS 15.4 but Apple is now up to iOS 15.5 and a new version of the ReSound Smart 3D app has come out since the iOS update. I’m only running a hand-me-down iPhone XS Max from my wife with my ReSound Quattros but I haven’t had any connectivity issues with iOS 15.5 and the latest ReSound Smart 3D app. Do the Prezias use Costco’s proprietary version of the Smart 3D app or can you use the ReSound Smart 3D app straight from the Apple Store?

Prezas use the ReSound version of the Smart 3D app.

Direct from the App store.

Of course all the apps for an iPhone are from the Apple App Store, but in this case as I posted before the Prezas use the ReSound Smart 3D app.

Only ReSound aids labeled as KS, like the 5 and 6, used Kirkland versions of the app.

Yeah. I knew that, too. To be clearer, I should have said something like “a Kirkland app or the ReSound Smart 3D app from the Apple Store.” I’ve never patronized Costco for HA’s so I have no good overall idea what goes with apps and HA’s from Costco.

I forget whether it’s been mentioned recently in this thread but the typical ReSound recipe for poor app connectivity is something like unpair your HA’s, uninstall the app, (reboot your phone?), repair your HA’s, reinstall the app. If one hasn’t tried that yet, it might help.

ReSound promised snappier and better connectivity in the latest version of the Smart 3D app and I’ve found that to be so relative to past iOS versions and past Smart 3D app versions, some of which have worked relatively lousy together.

Edit_Update: for clarity in my previous post, I’ve inserted the word “ReSound” as indicated in the phrase quoted here, using bold italics to indicate the insertion.

Do the Prezias use Costco’s proprietary version of the Smart 3D app or can you use the ReSound Smart 3D app straight from the Apple Store?

Further_Update: More intermediate steps to fix connectivity problems than repairing HA’s and reinstalling the Smart 3D app are, first, just force-closing the Smart 3D app by swiping up towards the top of the screen, then relaunching from its Home Screen icon. If that doesn’t work, rebooting one’s iPhone can sometimes fix things, too. I don’t think there is a single culprit to be blamed. There are probably bugs in both the Smart 3D app and in iOS causing problems from time to time but as I’ve mentioned above, the latest version of the Smart 3D app and iOS 15.5 usually work well for me with Quattros.

About 3 versions of iphone updates ago, every morning I started the process:

  1. Put in my (Resound) aids
  2. Reboot my iphone.
    Never have a pairing problem. Before that, it would occasionally pair only one aid.
    Nuisance, but not that big a deal.