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Repair, disassembly, and troubleshooting information for the iPhone 15, released September 22nd, 2023. It features a 6.1" OLED display, a 48 MP dual-camera system, and USB-C.

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iPhone 15, restarting every 3 miutes, I attached the crash log

Can someone help me identify the damaged part?



{"bug_type":"210","timestamp":"2024-10-13 12:39:15.00 +0100","os_version":"iPhone OS 17.6.1 (21G93)","roots_installed":0,"incident_id":"CFC67532-3A10-4D00-B71A-48C3C13C617A"}

{

"build" : "iPhone OS 17.6.1 (21G93)",

"product" : "iPhone15,4",

"socId" : "8120",

"socRevision" : "11",

"incident" : "CFC67532-3A10-4D00-B71A-48C3C13C617A",

"crashReporterKey" : "7c44c78ebbafe9249f39de16df14595b19d4b1fc",

"kernel" : "Darwin Kernel Version 23.6.0: Fri Jul 5 18:05:47 PDT 2024; root:xnu-10063.142.1~1\/RELEASE_ARM64_T8120",

"date" : "2024-10-13 12:39:15.81 +0100",

"panicString" : "panic(cpu 0 caller 0xfffffff045e50b08): SMC PANIC - ASSERTION FAILED: target\/d37\/target.cpp:258: 0, SMC BSC failure, spreadsheet ver(*10) 40\nS.sensor array 0 - 4 is 0x0, 0x80000, 0x0, 0x0, 0x0 \nF.sensor array 0 is 0x0\n\n - Misc(2) OUTBOX1 not ready\nASSERTION FAILED: target\/d37\/target.cpp:258: 0, SMC BSC failure, spreadsheet ver(*10) 40\nS.sensor array 0 - 4 is 0x0, 0x80000, 0x0, 0x0, 0x0 \nF.sensor array 0 is 0x0\n\n\nRTKit: RTKit-2419.140.12.release - Client: AppleSMCFirmware-4283.140.4.d37.REL\n!UUID: f1f1dc24-ce64-351b-9384-1c7ea32fc555\nTime: 0x000000014757015c\n\nFaulting task 2 Call Stack: 0x0000000000058944 0x00000000000582e8 0x0000000000058100 0x000000000005b11c 0x00000000000048d4 0x00000000000375d8 0x000000000003e274 0x00000000000469d4 000000000000000000\n\nChinook ASC Async error info: \nl2c_err_sts 0x5000fbfc00000000, l2c_err_adr 000000000000000000, l2c_err_inf 000000000000000000\nlsu_err_sts 000000000000000000, fed_err_sts 000000000000000000, mmu_err_sts 000000000000000000\ndpc_err_sts 000000000000000000\n\nMailbox (0): (0)\n Inbox AKF_KIC_INBOX_CTRL = 0x00020001, AKF_KIC_MAILBOX_SET = 0x11111101\n Outbox AKF_AP_OUTBOX_CTRL = 0x00020001, AKF_AP_MAILBOX_SET = 0x00000000\n\n dir endpoint

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try a replacement charging flex as it shows 0x80000 and sensor array 0

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Thank you, I will order one and once I have an update, I'll post it here.

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I replaced the charging port flex from another phone, and I'm still getting the same panic cored 0x80000.

Any other ideas?

panic(cpu 0 caller 0xfffffff047ee0b08): SMC PANIC - ASSERTION FAILED: target/d37/target.cpp:258: 0, SMC BSC failure, spreadsheet ver(*10) 40

S.sensor array 0 - 4 is 0x0, 0x80000, 0x0, 0x0, 0x0

F.sensor array 0 is 0x0

- Misc(2) OUTBOX1 not ready

ASSERTION FAILED: target/d37/target.cpp:258: 0, SMC BSC failure, spreadsheet ver(*10) 40

S.sensor array 0 - 4 is 0x0, 0x80000, 0x0, 0x0, 0x0

F.sensor array 0 is 0x0

RTKit: RTKit-2419.140.12.release - Client: AppleSMCFirmware-4283.140.4.d37.REL

!UUID: f1f1dc24-ce64-351b-9384-1c7ea32fc555

Time: 0x000000010f6c590f

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@ibuzzmobileltd if you have 3utool check the crash report

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What that code tells us is that the phone's processor cannot communicate with one or more of the sensors on the charging port assembly. Usually that's because the sensor has failed, and replacing that sensor generally fixes the problem.

Obviously that didn't work in your case, so the problem is somewhere else. There are two lines for each I2C bus that are used to talk to those sensors, and if either of those lines is damaged or disconnected then you'll get the kernel panic you're seeing.

Unfortunately the only way to know where those signals go is to have a schematic diagram and/or board (Gerber) files, neither of which seems to be available for the iPhone 15 models. Alisha (@flannelist), have you seen any yet?

We have seen other cases similar to yours where replacing the flex cable didn't help, and one of our more technologically advanced users was able to reflow the interposer, which fixed the problem. Apparently the motherboard had somehow been physically stressed and the interposer connections broke loose. Do you know if there's been any physical damage to the phone that could account for something like that?

One other thought occurred to me; there's always a chance the FPC connector on the motherboard has taken some damage on one of those pins; that would also account for that error, so be sure to carefully examine the logic board connector with a magnifying glass. Clean it with some 90% or higher concentration isopropyl (rubbing) alcohol and see if that makes any difference.

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Nope. No schematics that I am aware for any iPhones newer than the 12.

@ibuzzmobileltd I would make sure you replace with a known good cable, since this issue can still occur with some substandard third party replacements. Otherwise the issue could be on the board.

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@flannelist Yeah, they did replace it with a pull from another phone, so it's probably a good cable, which is why I suggested other possibilities. As you've confirmed, that would tend to narrow it down to the connector or the board.

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It might be a problem with the rear cover, since the wireless charging pad ,the flashlight and a chip that helps the iPhone identify whether the rear cover is "genuine" is connected to the rear cover flex cable. When I was replacing the rear cover on my 15, the same problem occurs when I booted it without installing the rear cover. There has also been cases of iPhone 15s restarting randomly with a defective rear cover flex cable. You should probably check that cable and the press connector to see if there's anything wrong with it. There might be problems on the charging port as well, so I would suggest you to get a rear cover and a charging flex from a working 15 and also check the motherboard for any damage, since there could be disconnected solder points between the two layers of the motherboard that's causing the problem.

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