iPhone 16 Pro Freezes and Restarts

So …. Booked in to the Apple Store at Bluewater and diagnostic showed software fault, possibly a rogue app from my install. Anyway the “Apple boy” (his words) did a full reinstall from scratch. I then reinstalled the apps I really need, and disposed of those I don’t, (did me a favour really). Since then no problem. Love the new 16.

Having similar restarts, with a bunch of panic-full logs mentioning messages similar to "panic(cpu 0 caller 0xfffffff04499471c): userspace watchdog timeout: no successful checkins from SpringBoard (2 induced crashes) in 180 seconds". The hangs seem to happen random times in the day, though just before 7 pm seems to be fairly common. Looking at the logs I noticed the following:

      "turnstileInfo": [
        "thread 452495: blocked on 452623, hops: 1, priority: 47",
        "thread 452560: turnstile has unknown inheritor",
        "thread 452612: turnstile has unknown inheritor",
        "thread 452623: turnstile blocked on task pid 1, hops: 3, priority: 47 (com.apple.iconservices (service throttled by launchd))",
        "thread 452627: blocked on 452495, hops: 2, priority: 20 (com.apple.springboard.backgroundappservices)"
      ],
      "pageIns": 38,
      "systemTimeTask": 0.46156837499999998,
      "rawFlags": "0x4409C401",
      "portlabels": {
        "3": "com.apple.iconservices (service throttled by launchd)",
        "5": "com.apple.springboard.backgroundappservices"
      },
      "timesDidThrottle": 0,
      "csTrustLevel": 7,
      "waitInfo": [
        "thread 452495: unfair lock 0x2026b8cc0 owned by thread 452623",
        "thread 452560: spinlock 0x16f3a27a0",
        "thread 452612: spinlock 0x16fa32ab0",
        "thread 452621: pthread condvar 0x27f9edc58",
        "thread 452623: mach_msg receive on port 0x336df9da4b210d75 name 0x4d0b",
        "thread 452627: mach_msg receive on port 0x336df9da4a665e35 name 0xe40f",
        "thread 452629: mach_msg receive on port set 0x336df9da4df507d5",
        "thread 452631: mach_msg receive on port set 0x336df9da4df50805"
      ],
      "procname": "SpringBoard",

Thread 452623 seems to be com.SpringBoardHome.SBHIconImageCache.work appears to be what is hanging springboard, and it seems to be waiting on task 1 / com.apple.iconservices.iconservicesagent.

Looking at task 1 I see:

"name": "user\/501\/com.apple.iconservices.iconservicesagent throttled aft",

And it seems to be waiting on:

"thread 449772: semaphore port 0x336df9da4af8e855 owned by pid 1"

I then checked my logs again and noticed a huge number of iconservicesagent crash logs about including ones around 3 minutes before each of the panic full logs, but many many more, looking at those logs they appear to be sigabrt. Looking further there seems to be a message about Address size fault. One other thing I noticed is that the some of the icons in control center on my phone were blank, until I removed and readded the controls. I can normally tell when its starting to happen as it appears to get laggy when drawing buttons, responding to typing in places where it would show some sort of icon, such as maps, settings, app directory page, search, etc.

Update to 18.0.1 has resolved my issues thankfully

Support had me go to settings - camera - Macro Control and turn it off. Do a hard boot and it seemed to fix it for now.

Same issues here. Returned my 16 Pro after upgrading from a 13 Pro. My first phone was unusable, might have had hardware issues. Extremely hot in the morning, alarm clock not going off, camera app would never open, multiple crashes per day, unusable in general. Apple support noticed issues after remote diagnostics, after which I got a replacement. This newer 16 Pro seems to be performing much better, but has the same kinds of issues to a less severe degree. It still crashes at least once a day, and a restart seems to temporarily fix the issues. I also restored from iCloud and have noticed that some apps don't redownload after restoring, so might be an issue with iCloud restores. My home is filled with Apple devices, so I feel really disappointed. Very unlike Apple to have a launch this bad.

Phone 16 Pro Freezes (won’t Start):

quickly press buttons volume up, quickly press volume down, press and hold down large power on button until the Apple logo appears. You may have to hold it down for 20-30 seconds. The whole key to this operation is “Quickly” in secession; up, down, and hold down.

I did a fresh install from scratch and installed apps one by one, that has fixed the issues for me. Phone has been solid since then.

My iPhone 16 Pro Max is fine now, but had to book a genius bar appointment to solve the issues. Total reformat and reinstall, but it's such a great phone and camera.

3 things can cause this irritating type action. A installed app is corrupted and or misbehaving, water damage and lastly possibly tho unlikely an infection. You can try deleting apps one at a time or resetting phone if it’s an app or virus that would clear it up some. Unfortunately last times it’s happened to me required phone replacement

Same issues since unboxing and initial transfer. I had Apple support run diagnostics online and no issue with device but they found that software was “unstable”. They want me to have the device checked at a Genius Bar.

Same here, on my iPhone 13 Pro. This ramdom reboot has been starting since I import some pictures taken by Samsung S23 Ultra from Nov 15th, and it keeps rebooting twice or 3 times a day. And in last weekends, it will just happen after I open the camera app and the phone app is malfunctioning as well. I did several hard reboot and now the camera and photo app seem to be working fine. But connecting this iPhone to CarPlay still cause reboot.

I went to the local Apple Store and the staff told me I could save all the data and do a wipe and start as a new phone, secondly, I could trade in. I don't feel like this can be a solution to a problem like this.

But from the replies in this thread, I found that even a new iPhone can also have the same issue if restore the data from iCloud. This is not acceptable and it will keep me away from sticking to iPhone, have been using iPhone since 2012.

The diagnostic showing dart-ave error and I've looked it up but found no final solution for this. Hope Apple can hear us and make the update ASAP. I would not trade in before the solution is provide.

I posted several weeks ago about this same problem, and about the power boot to start it again; vol. up, volume down and press an hold power button down, which worked for me the few times it happened. I was curious about this new iPhone 16 thing that tells you not to overcharge it. Ever since iPhone 4 I just leave it charging all night with no problem. I’ve star playing the new game of unplugging it for the night ( iPhone 16 seems to charge a lot faster than my Xr). I haven’t had it happen since. Just thought I’d pass it on, though I would think it shouldn’t be a problem charging it overnight. Happy to hear any comments pertaining to this.

Same here, must be a serious iCloud issue. So many problems after iCloud restore and none after setting up as new.

Same exact issues... crashing and restarting by itself, was able to use a couple of apps but would crash with most of the apps, if they actually showed at all. Brought it in at the genius bar and they gave me a replacement. The new one was behaving well for about 30 minutes after the data transfers from cloud but then started crashing again after it had loaded about an eighth of the apps.

Now I can't even open settings to erase all data and start over again :(

Been without a phone for a week because of these issues. Not sure what to do anymore. It will take forever to get another appointment with the genius bar.