You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

💡 Did you know?

⏺ If you can't accept iCloud Terms and Conditions... Learn more >

⏺ If you don't see your iCloud notes in the Notes app... Learn more >

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

panicString" : "panic(cpu 3 caller 0xfffffff0273264fc)

iphone X auto restart


panicString" : "panic(cpu 3 caller 0xfffffff0273264fc)


I don't understand data and analysis. Can anyone help explain it?

iPhone X, iOS 16

Posted on Jun 27, 2024 5:51 AM

Reply
Question marked as Top-ranking reply

Posted on Jun 27, 2024 6:36 AM

how about this


panicString" : "panic(cpu 3 caller 0xfffffff0273264fc): userspace watchdog timeout: no successful checkins from thermalmonitord in 180 seconds\nservice returned not alive with context : is_alive_func returned unhealthy : current 3fffffffffe, mask 67fffffffff, expected 67fffffffff. SD: 0 BC: 1 RC: 0 BS: 0, Missing sensor(s): TG0B TG0V \nservice: backboardd, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ago\nservice: SpringBoard, total successful checkins in 38394 seconds: 3823, last successful checkin: 0 seconds ago\nservice: mediaserverd, total successful checkins in 38422 seconds: 3824, last successful checkin: 0 seconds ago\nservice: logd, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ago\nservice: thermalmonitord, total successful checkins in 38422 seconds: 3658, last successful checkin: 180 seconds ago\nservice: runningboardd, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ago\nservice: wifid, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ag\nDebugger message: panic\nMemory ID: 0x1\nOS release type: User\nOS version: 20H343\nKernel version: Darwin Kernel Version 22.6.0: Mon Apr 22 20:54:20 PDT 2024; root:xnu-8796.142.1.703.7~1\/RELEASE_ARM64_T8015\nKernelCache UUID: 44F4274CEA7A7F7409E6842ACC86EDF7\nKernel UUID: 1F7E1745-90AB-35D6-933B-AC917635D3FE\nBoot session UUID: F9E42D01-9F2A-4B65-A2FA-4AD32159F9F3\niBoot version: iBoot-8422.142.2.700.1\nsecure boot?: YES\nroots installed: 0\nPaniclog



3 replies
Question marked as Top-ranking reply

Jun 27, 2024 6:36 AM in response to Mac Jim ID

how about this


panicString" : "panic(cpu 3 caller 0xfffffff0273264fc): userspace watchdog timeout: no successful checkins from thermalmonitord in 180 seconds\nservice returned not alive with context : is_alive_func returned unhealthy : current 3fffffffffe, mask 67fffffffff, expected 67fffffffff. SD: 0 BC: 1 RC: 0 BS: 0, Missing sensor(s): TG0B TG0V \nservice: backboardd, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ago\nservice: SpringBoard, total successful checkins in 38394 seconds: 3823, last successful checkin: 0 seconds ago\nservice: mediaserverd, total successful checkins in 38422 seconds: 3824, last successful checkin: 0 seconds ago\nservice: logd, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ago\nservice: thermalmonitord, total successful checkins in 38422 seconds: 3658, last successful checkin: 180 seconds ago\nservice: runningboardd, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ago\nservice: wifid, total successful checkins in 38422 seconds: 3825, last successful checkin: 0 seconds ag\nDebugger message: panic\nMemory ID: 0x1\nOS release type: User\nOS version: 20H343\nKernel version: Darwin Kernel Version 22.6.0: Mon Apr 22 20:54:20 PDT 2024; root:xnu-8796.142.1.703.7~1\/RELEASE_ARM64_T8015\nKernelCache UUID: 44F4274CEA7A7F7409E6842ACC86EDF7\nKernel UUID: 1F7E1745-90AB-35D6-933B-AC917635D3FE\nBoot session UUID: F9E42D01-9F2A-4B65-A2FA-4AD32159F9F3\niBoot version: iBoot-8422.142.2.700.1\nsecure boot?: YES\nroots installed: 0\nPaniclog



Jun 27, 2024 6:10 AM in response to jeje9

No information can be gathered from the information provided for that panic log. Make sure you are using the latest iOS version. There are also 2 things you can do:

  • Force close all apps. Close an app on your iPhone or iPod touch - Apple Support
  • Force restart your phone. This may take a couple of attempts to get the speed and sequence of the key presses correct. The last step of holding the side button until the Apple logo appears could take up to 20 seconds and you will want to ignore anything else that comes up on the screen.

Force restart iPhone - Apple Support


If you still experience the same problem, then move on to resetting your iPhone. This is not supposed to affect any data on your phone, but I would still recommend to always have a backup.

Reset iPhone settings to their defaults - Apple Support

Jun 27, 2024 6:42 AM in response to jeje9

Analytics is useless unless you have special software to read the raw data and special training to interpret the results.


Save yourself some time and try a Forced Restart on the phone. Follow the instructions very carefully, as this is a bit tricky. You may need to repeat this several times.


Force restart iPhone - Apple Support


There are only 2 possible results when you perform a Forced Restart:


1) The phone returns to normal operation


Or, if the phone is still acting up......


2) There is a hardware problem with the phone that will need attention at the Apple Store (make an appointment) or take the phone to an authorized Apple Service shop.


You can find a list of authorized service shops in your area using the link just below:


Find Locations



panicString" : "panic(cpu 3 caller 0xfffffff0273264fc)

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.