iPhone system data blew up after iOS 16.0.1 and new iphone 14 pro

Update September 25:

I updated to iOS 16.0.2

I did a factory reset and restored from my iCloud backup

Did no good. The problem continues.

I have a Genius Bar appointment coming up. Will report outcome here.

Hello TheLittles,

Thanks for the tip! I did a factory reset of my iphone and restored from my iPhone backup on iCloud…unfortunately the problem remains. So far the only solution that helps temporarily is for me to do the hard restart (volume up, volume down, off). This will clear the system data bloat but it will creep up until my entire 512 GB is full with “system data”. Usually this happens within 8-12 hours.

Less, thank you.

So here is my update: During this entire episode, I noticed that Apple Music was always running and downloading or streaming in the background. It was the top app in both cellular data use and power consumption.

This also explains why my iPhone battery would be at 20% way too early in the day.

When I investigated, Apple Music was constantly downloading a movie that I purchased in iTunes. But it would never finish. I deleted the download and it started downloading another movie I had purchased. I deleted this second movie. Both movies were purchased on iTunes years ago.

I also opened the Apple TV app to check what purchased movies had been downloaded. I had about 8 movies, and all had completed downloading.

12 hours later, no more movies are being downloaded in Apple Music.

As for my storage problem, so far, things are remaining stable with over 300 GB remaining free on my 512 GB iPhone. System data remains low.

I’ll touch base again if the problem returns.