Blue screen startup few times a day since iOS 8

Hello kennmoo,

It sounds like your phone is restarting on its own with a blue screen intermitently even after you reset the phone by holding the Home and the Sleep/wake buttons. I would next recommend backing up to iTunes and restoring your phone with this article:

Back up and restore your iOS device with iCloud or iTunes

If the issue persists, I would next restore it as a new device and test it to help isolate the issue to the backup.

support.apple.com/kb/ht4137

Thank you for using Apple Support Communities.

All the best,

Sterling

Same problem here.

Its a refurbished iPhone 5s 32gb with exactly the same annoying behavior. Most of the time it panics again after first panic reboot.

I do think its a device problem, as it happens more often when iPhone gets warm.

Resetting the device didn't help.

1. Panic:

Incident Identifier: E38F5602-5525-47F1-AE96-A6664B4288C1

CrashReporter Key: xxxxxx

Hardware Model: iPhone6,2

Date/Time: 2014-10-23 15:41:42.138 +0200

OS Version: iOS 8.1 (12B411)

panic(cpu 0 caller 0xffffff800727330c): "ANS Recoverable Panic - GEB detected failure type 0x0000 start page 0x00000000 length 0x00000000 bus 1, buffer at 0x1706588. mfg 98-00-01-38-19-04 psf 0 current psf 0@src/drivers/apple/anc/anc.c:4310 - PreNand(15)"

Debugger message: panic

OS version: 12B411

Kernel version: Darwin Kernel Version 14.0.0: Tue Oct 7 00:04:44 PDT 2014; root:xnu-2783.3.13~4/RELEASE_ARM64_S5L8960X

iBoot version: iBoot-2261.3.32

secure boot?: YES

Paniclog version: 3

Kernel slide: 0x0000000004200000

Kernel text base: 0xffffff8006202000

Epoch Time: sec usec

Boot : 0x54490561 0x00000000

Sleep : 0x00000000 0x00000000

Wake : 0x00000000 0x00000000

Calendar: 0x5449057d 0x0003bf59

Panicked task 0xffffff8087c1fb20: 31223 pages, 171 threads: pid 0: kernel_task

panicked thread: 0xffffff8087dfca00, backtrace: 0xffffff8003d3bb00

lr: 0xffffff80062db408 fp: 0xffffff8003d3bb60

lr: 0xffffff8006220fbc fp: 0xffffff8003d3bbc0

lr: 0xffffff800727330c fp: 0xffffff8003d3bc10

lr: 0xffffff80069e7adc fp: 0xffffff8003d3bc40

lr: 0xffffff80065d013c fp: 0xffffff8003d3bc70

lr: 0xffffff80065d01b8 fp: 0xffffff8003d3bca0

lr: 0xffffff80062d83a0 fp: 0x0000000000000000

... stack traces

And log of panic:

Incident Identifier: BE5095A2-AF71-4934-8B22-39A8AAA1BE0C

CrashReporter Key: xxxxx

Date: 2014-10-23 15:41:41 +0200

Reset count: 1

Boot failure count: 0

Boot faults:

Boot stage: 0

Boot app: 2681261667

2. Panic right after the first one:

Incident Identifier: C5023A11-08C3-45C1-A317-DF4F993EC7EA

CrashReporter Key: xxxxx

Hardware Model: iPhone6,2

Date/Time: 2014-10-23 15:41:01.775 +0200

OS Version: iOS 8.1 (12B411)

panic(cpu 1 caller 0xffffff8016e7330c): "ANS Recoverable Panic - NAND CRC Error@src/drivers/apple/anc/anc_postnand.c:122 - PostNand(16)"

Debugger message: panic

OS version: 12B411

Kernel version: Darwin Kernel Version 14.0.0: Tue Oct 7 00:04:44 PDT 2014; root:xnu-2783.3.13~4/RELEASE_ARM64_S5L8960X

iBoot version: iBoot-2261.3.32

secure boot?: YES

Paniclog version: 3

Kernel slide: 0x0000000013e00000

Kernel text base: 0xffffff8015e02000

Epoch Time: sec usec

Boot : 0x5449054e 0x00000000

Sleep : 0x00000000 0x00000000

Wake : 0x00000000 0x00000000

Calendar: 0x54490555 0x000183fb

Panicked task 0xffffff809781fb20: 14988 pages, 163 threads: pid 0: kernel_task

panicked thread: 0xffffff80979e67a0, backtrace: 0xffffff8009213b00

lr: 0xffffff8015edb408 fp: 0xffffff8009213b60

lr: 0xffffff8015e20fbc fp: 0xffffff8009213bc0

lr: 0xffffff8016e7330c fp: 0xffffff8009213c10

lr: 0xffffff80165e7adc fp: 0xffffff8009213c40

lr: 0xffffff80161d013c fp: 0xffffff8009213c70

lr: 0xffffff80161d01b8 fp: 0xffffff8009213ca0

lr: 0xffffff8015ed83a0 fp: 0x0000000000000000

.. stack traces

And log of panic:

Incident Identifier: 6322F436-C73E-4007-910B-E4E077B97979

CrashReporter Key: xxxxxx

Date: 2014-10-23 15:41:01 +0200

Reset count: 2

Boot failure count: 1

Boot faults:

Boot stage: 0

Boot app: 2681261667

IIf you have the same problem follow the suggestions provided by sterling r.

As I've written: "Resetting the device didn't help"

I have the same issue - I believe its the hardware - Im here at the apple store for the second time this week trying to solve the problem. Service is really poor - waiting time 2 1/2 hrs😠

I have the same issue. Iphone 5s, IOS 8.1.1. Phone randomly shuts down and the predominant item in the diagnostics is "ANS Recoverable Panic" Most of the time, I need to do a hard reset (hold power and home buttons for 10-15 seconds) to get the phone to restart. Occasionally the phone restarts on it's own. If you connect the phone to iTunes after a shut down, iTunes will recognize it as being in "Recovery Mode" and ask you to do a full restore.

I have done 2 full restores (restored the phone as new and then re-added my apps/settings) and am still experiencing this issue.

I cannot find any pattern that would point to a cause.. No particular network (4g vs 3g vs WiFi), no particular app that precedes the shutdown, nothing. Most of the time, the phone just shuts down while it's doing nothing sitting on my desk.. I have a replacement phone on the way from Verizon and I guess I will see if the issue persists on a new device.

My device was defective. Apple replaced it by a refurbished one. Now everything is working.