I'm having an issue with an iPhone 14 with the iOS 26 update not making any notification sounds at all. I've don't all the trouble shooting I know. Checking for silent mode, making sure all focuses are turned of and making sure the volume is up. I'm really at a loss over this. I'm trying to get my wife switched over to an iPhone and gave her my 14 when I got a 17 this past weekend. If she misses to many more notifications she's going to switch back. I can't blame her, I had the same problem with that phone for the past year, I just trained myself to check for missed notifications once an hour or so. That won't work for her.