crwdns2934243:0crwdne2934243:0 Leon Wong

crwdns2947189:0crwdne2947189:0:

Phone restarts when idled in locked screen

crwdns2934249:0crwdne2934249:0:

crwdns2866306:0crwdne2866306:0:

iPhone XS Max

crwdns2915684:0crwdne2915684:0:

open

crwdns2934241:0crwdne2934241:0 Leon Wong

crwdns2947189:0crwdne2947189:0:

Phone restarts when idled in locked screen

crwdns2934249:0crwdne2934249:0:

* As stated in the title, phone restarts itself every ~3 minutes and only when the screen is locked
* works fine when I'm using the device (even if the phone is unlocked and on for couple of hours)

***symptom/occurrence:***

* rear phone (near camera) is hot when i notice the device is restarting
* the device never restarts when
** playing spotify music or apple music with the screen off
** having apple map or google map navigating with the screen off

***troubleshooting***

* attempt to stimulate proximity sensor by calling through whatsapp and physically touches near the sensor
* sends a message to the device while the screen is locked. audio and vibration

***question***:

* where should I start looking and how do I test/debug to confirm what components is faulty, or software?

panic string (partial):

[code]
panic(cpu 2 caller 0xfffffff0164a67c4): "i2c0::_checkInterrupts error interrupt; last read status 10810100 int shadow 00890100 xfer 80000000 fifo 00000003 for device ad5860" .cpp:470
Debugger message: panic
Memory ID: 0x1
OS release type: User
OS version: 21E237
Kernel version: Darwin Kernel Version 23.4.0: Fri Mar  8 23:30:38 PST 2024; root:xnu-10063.102.14~67/RELEASE_ARM64_T8020
Fileset Kernelcache UUID: B219F39BC3EDFDDE6A8F938F5B10B3AD
Kernel UUID: 56BF37FD-7558-3CB2-8652-BF6315891829
Boot session UUID: 5297AE4C-4178-42BC-B462-C786D115234F
iBoot version: iBoot-10151.102.2
secure boot?: YES
roots installed: 0
Paniclog version: 14
KernelCache slide: 0x000000000d440000
KernelCache base:  0xfffffff014444000
Kernel slide:      0x000000000d448000
Kernel text base:  0xfffffff01444c000
Kernel text exec slide: 0x000000000e114000
Kernel text exec base:  0xfffffff015118000
mach_absolute_time: 0x198650a4a
Epoch Time:        sec       usec
Boot    : 0x6618009e 0x000bf6b9
Sleep   : 0x00000000 0x00000000
Wake    : 0x00000000 0x00000000
Calendar: 0x661801ab 0x000c5444

Zone info:
Zone map: 0xffffffddacd10000 - 0xffffffe3acd10000
. VM    : 0xffffffddacd10000 - 0xffffffde93374000
. RO    : 0xffffffde93374000 - 0xffffffdee0040000
. GEN0  : 0xffffffdee0040000 - 0xffffffdfc66a4000
. GEN1  : 0xffffffdfc66a4000 - 0xffffffe0acd08000
. GEN2  : 0xffffffe0acd08000 - 0xffffffe193370000
. GEN3  : 0xffffffe193370000 - 0xffffffe2799d8000
. DATA  : 0xffffffe2799d8000 - 0xffffffe3acd10000
Metadata: 0xffffffee5ebe0000 - 0xffffffee603e0000
Bitmaps : 0xffffffee603e0000 - 0xffffffee60e94000
Extra   : 0 - 0

TPIDRx_ELy = {1: 0xffffffdee02c03d0  0: 0x0000000000000002  0ro: 0x0000000000000000 }
CORE 0: PC=0xfffffff015195af8, LR=0xfffffff015195af8, FP=0xffffffe3b58f7ef0
CORE 1: PC=0xfffffff015195af8, LR=0xfffffff015195af8, FP=0xffffffe3b5a8fef0
CORE 2 is the one that panicked. Check the full backtrace for details.
CORE 3: PC=0xfffffff015195af8, LR=0xfffffff015195af8, FP=0xffffffe3b5c27ef0
CORE 4: PC=0xfffffff015195afc, LR=0xfffffff015195af8, FP=0xffffffe3b58c7ef0
CORE 5: PC=0xfffffff015195af8, LR=0xfffffff015195af8, FP=0xffffffe3b5f27ef0
Compressor Info: 15% of compressed pages limit (OK) and 7% of segments limit (OK) with 1 swapfiles and OK swap space
Panicked task 0xffffffe1933891a0: 0 pages, 420 threads: pid 0: kernel_task
Panicked thread: 0xffffffdee02c03d0, backtrace: 0xffffffe3b5aef7e0, tid: 300
lr: 0xfffffff015161ff8  fp: 0xffffffe3b5aef850
lr: 0xfffffff01529a2c4  fp: 0xffffffe3b5aef8c0
lr: 0xfffffff015298ca8  fp: 0xffffffe3b5aef980
lr: 0xfffffff01511fb08  fp: 0xffffffe3b5aef990
lr: 0xfffffff01516199c  fp: 0xffffffe3b5aefd40
lr: 0xfffffff01586b140  fp: 0xffffffe3b5aefd60
lr: 0xfffffff0164a67c4  fp: 0xffffffe3b5aefe00
lr: 0xfffffff0164a742c  fp: 0xffffffe3b5aefe30
lr: 0xfffffff0164a5988  fp: 0xffffffe3b5aefe50
lr: 0xfffffff0157893f4  fp: 0xffffffe3b5aefea0
lr: 0xfffffff015785cb4  fp: 0xffffffe3b5aefee0
lr: 0xfffffff0157865e4  fp: 0xffffffe3b5aeff20
lr: 0xfffffff015128800  fp: 0x0000000000000000
Kernel Extensions in backtrace:
com.apple.driver.AppleS5L8940XI2C(1.0d2)[094AFE35-8604-36A6-97D5-F018DAFFE3A4]@0xfffffff0164a4ba0->0xfffffff0164a7ad7
dependency: com.apple.driver.AppleARMPlatform(1.0.2)[E523EAE1-2680-3F5D-A65E-9D7B7DCE5E38]@0xfffffff0159f3840->0xfffffff015a45a83
dependency: com.apple.driver.AppleGPIOICController(1.0.2)[6077F261-2F09-3E27-8EAE-A167F88FC327]@0xfffffff015f52710->0xfffffff015f5d1cf

last started kext at 1035547564: com.apple.driver.AppleUSBEthernetDevice    7.0 (addr 0xfffffff014920e60, size 4658)
loaded kexts:
com.apple.driver.AppleUSBEthernetDevice    7.0
com.apple.driver.AppleIDAMInterface    1
com.apple.driver.AppleUSBDeviceMux    1.0.0d1
com.apple.iokit.IOAccessoryPortUSB    1.0.0
com.apple.driver.AppleUSBDeviceNCM    5.0.0
com.apple.driver.AppleUSBMike    1.0.0d1
com.apple.driver.AOPTouchKext    312
com.apple.driver.AppleEmbeddedLightSensor    1.0.0d1
...
[/code]

panic analyzer suggests:

[code]
- U4700 Big Audio Codec IC
- Baseband/NFC
- i2c0 line
- U2700/U6110/J6400
- NAND
[/code]

crwdns2866306:0crwdne2866306:0:

iPhone XS Max

crwdns2915684:0crwdne2915684:0:

open