Unsual Battery Drain Related to MyPhonak App Under iOS 26.5.2 - Hearing Loss Apps - Hearing Aid Forum

First, let me say I’ve been running my I90 Infinio Spheres for over a 1.8 years and not had this problem before. On 6/18/26 I updated to the latest MyPhonak app version and around 6/29/26, I got the iOS 26.5.2 update. Within days after that, I began to notice unusual battery drain whereas in the almost two years previous, I did not have any such problems.

My running conditions are almost always iPhone in Battery Low-Power mode (in which background app refresh for the MyPhonak app is OFF). Stay Connected turned on in the Devices tab setting of the MyPhonak app. Running in Airplane Mode at home with Wi-Fi and Wi-Fi calling enabled when at home.

The attached images show my iPhone battery usage for the past day when my Spheres have been turned off and kept in their case since 1 PM yesterday (~27 hours ago). The background use of the MyPhonak app is excessively high. Presumably, it’s in some sort of loop trying to find and connect to my hearing aids.

In response to this (to see what happens), I’ve turned off Stay Connected in the MyPhonak app, I’ve gone into normal power mode and turned off Background App Refresh for the MyPhonak app (keeping the elephants away). I’ve forced killed the MyPhonak app and rebooted my iPhone. From now until I figure out what’s causing this, I’ll force-kill the MyPhonak app every time I exit.

I’ve searched the forum but haven’t found any recent posts about unusual battery drain for the MyPhonak app on the iPhone. I have noticed in normal use of my Spheres that iOS has trouble staying connected to my left (currently Master) but not my right. The other apps that show somewhat raised usage, I may have just been using more than usual. And since I had no problem with this before the recent iOS 26.5.2 update, it’s something new in my iPhone setup.

Any sage advice to decipher this problem would be gratefully appreciated.

I think I found the rest of the answer to my unusual iPhone battery drain.

Part of the answer was as described in my original post above: stopping MyPhonak drain caused by not wearing my hearing aids for long periods during the day while working outside, and not wanting to expose them to heat and risk getting sweat inside. I had the MyPhonak app set to Stay Connected, and my iPhone kept looking for my , which weren’t on.

The other part of the equation was Emergency Weather Alerts from the National Weather Service that somehow got corrupted and kept a system notification daemon alive. Although I received alerts during a heavy rainstorm on 7/15 and cleared them individually, the same alerts kept reappearing day to day over the following week, even after being cleared many times.

The MyPhonak drain had probably been ongoing for some time, but the sudden Emergency Weather Alert issue was the straw that broke the camel’s back and made me want to figure out and fix the drain.

Alert Still Appearing After A Week of Repeatedly Clearing

Battery consumed by a system daemon does not appear in iOS Settings > Battery > usage statistics, except in the global graph of screen and idle time battery usage, not on a “per app” basis.

Courtesy of Google Gemini’s summary of a complex thread, here’s how I fixed the daemon problem; the MyPhonak fix is described in my original post above.

TL;DR: How I Fixed “Ghost” Emergency Alert Loop & Extreme Idle Battery Drain on iOS 26.5.2

The Problem: My iPhone experienced severe background battery drain (losing 30%–40% over an 8-hour idle period). Several emergency weather alerts got stuck in a notification loop, continuously keeping background daemons active and preventing the CPU from entering deep sleep.

The Solution (3-Step Fix):

Break the Alert Loop:

Cleared all notifications globally by pressing and holding the X to the right of the Notifications section heading on my lock screen

Went to Settings > Notifications, scrolled to the bottom, and temporarily toggled off Emergency Alerts (Government Alerts) to interrupt the active notification loop.

Force Hardware Restart (Purge Volatile Memory):

Performed a hard reboot to kill lingering system processes:

Press and quickly release Volume Up.

Press and quickly release Volume Down.

Press and hold the Side/Power button continuously until the Apple logo appears.

Reset Location & Privacy Cache:

Went to Settings > General > Transfer or Reset iPhone > Reset > Reset Location & Privacy.

Why this works: Emergency alerts heavily tie into location daemons (locationd). Resetting Location & Privacy purges corrupt background tokens/geofencing caches causing infinite polling loops without erasing personal files or media.

Result: The ghost notification was permanently cleared, background power consumption returned to normal, and idle battery drain dropped back to the expected 1%–3% over an 8-hour stretch.

The following usage graph screenshot shows how dramatically idle-time battery usage on my iPhone was reduced after combining the MyPhonak app fix with killing the corrupt emergency weather alerts. Midway through Wednesday, 7/22, I applied the daemon fix, and along with turning off the Stay Connected MyPhonak option and force-killing that app when I exited, my background battery usage on my iPhone has dropped drastically.

Because of clearing the location settings in Location & Privacy, I have had to individually re-approve each iPhone app’s location use as I use it, but I don’t mind that to get rid of the battery drain.