⟐ Commented April 29, 2026 at 13:08 MST

So a family member gave me their iPhone 17 to look at. It is currently stone dead. No signs of life at all. They said the battery was at 1% and then the screen went black (assume battery died). After that they said they could not turn the phone back on. They left it charging and still could not turn it on.

I took a look myself and see it is completely dead. There's nothing on screen. There's no battery icon or anything to say it's low on battery. The screen just remains black.

I tried the force restart method (says to quickly press volume up, then down and then hold the power button until Apple logo appears) which did nothing. I've tried multiple cables, computers and wall outlets. Still same.

I have a USB amp meter and I can see when I connect cable, it cycles between different watts. It regularly jumps from 0 to about 2.1W. I see frequent 2.1W readings but it keeps going back to 0 and then up again (sometimes at a lower wattage). It's like it's trying to charge, but can't for some reason.

The phone is still in warranty period, so it can be returned. However, I'd like to check if there's maybe anything that can be done to bring it back to life as it does seem weird that it just died after the battery went out.

Anyone know what could be wrong? If it's a hardware issue, then I'll just send it back for a replacement. But I am hoping there's a way to bring it back to life as this will be faster than waiting for a replacement. It's not looking promising though.

⟐ Commented April 28, 2026 at 0:39 MST

how can i know what screws i need?

⟐ Commented April 27, 2026 at 16:23 MST

⟐ Answered April 26, 2026 at 9:06 MST

I have recently had my front screen replaced as I accidentally dropped it and it smashed. I took it to my local repair shop and he changed the screen, though after 3 minutes the phone kept on continuously restarting, the screen would freeze, go purpleish-pink and then reboot.

I took the phone back and got him to change the screen to a different one, in case this one was faulty, but it kept happening.

I have found the panic dump and attached the screenshot here, could one of your marvellous people have a look at the first page and let me know what is happening so I can go back to the repair shop and tell him to fix it? I have also downloaded the whole file as well and stored it in Dropbox.

https://www.dropbox.com/scl/fi/e9y4l8el9...

⟐ Answered April 26, 2026 at 9:04 MST

"product" : "iPhone17,1",

"socId" : "8140",

"socRevision" : "11",

"incident" : "583B00EF-44FD-48D2-8F86-8A2638DF95C4",

"crashReporterKey" : "a351540b553d38e81439d2522d52b901f31dc74a",

"kernel" : "Darwin Kernel Version 24.6.0: Wed Mar 4 22:15:54 PST 2026; root:xnu-11417.140.69.706.9~1\/RELEASE_ARM64_T8140",

"date" : "2026-04-25 13:11:09.65 +1000",

"panicString" : "panic(cpu 0 caller 0xfffffff0384bd7dc): SMC PANIC - ASSERT: target\/d93\/target.cpp:195: 0, SMC BSC failure, spreadsheet ver(*10) 60\nS.sensor array 0 - 7 is 0, 3145728, 0, 0, 0, 0, 0\nF.sensor array 0 - 1 is 0\n\n - Misc(2) OUTBOX1 not ready\nASSERT: target\/d93\/target.cpp:195: 0, SMC BSC failure, spreadsheet ver(*10) 60\nS.sensor array 0 - 7 is 0, 3145728, 0, 0, 0, 0, 0\nF.sensor array 0 - 1 is 0\n\n\nRTKit: RTKit-2784.140.9.release - Client: AppleSMCFirmware_H17-5204.140.29.d93.REL\n!UUID: 0cd7a03d-b1fe-3ddf-aee8-dab8cc3af42b\nASLR slide: 0x0000000000000000\nTime: 0x00000001304b4fbc\n\nFaulting task 2 Call Stack: 0x0000000000054e58 0x0000000000054818 0x0000000000054634 0x0000000000053010 0x000000000003f6e8 0x0000000000067d30 0x0000000000048578 0x00000000000509ac 000000000000000000\n\nChinook ASC Async error info: \nl2c_err_sts 000000000000000000, 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

⟐ Answer edited April 29, 2026 at 8:15 MST

I also replaced the battery with another one to rule out any battery-related issue.

After putting everything back together, the issue still persists. When the phone is unplugged and I try to turn it on, it makes a small “cling” sound and then goes directly into DFU mode. It keeps repeating this behavior every time I try to power it on.

When I connect the phone to a laptop while it’s in DFU mode and attempt to restore it using iTunes, the restore process starts but freezes halfway through. The screen stays stuck for a long time and does not complete. I repeated the process multiple times with the same result. I also tried restoring using 3uTools, but it behaves the same way, the restore begins and then gets stuck halfway.

⟐ Edited by author April 24, 2026 at 21:38 MST

Anyone got any idea how to fix that?

⟐ Commented April 24, 2026 at 16:28 MST

I have two broken Apple Lightning cables. One is a USB to Lightning and the other one is USB-C to Lightning.

I'm more or less ok with the first one and it's wiring diagram - it has 4 wires just like the new replacement connectors I got from AliExpress 😁

However with a USB-C to Lightning I feel way less confident - this one has an additional blue wire and here I need your help - maybe someone could share a proper wiring diagram for this case?

Thanks in advance 🙏

P.S.:here are the pics of the new connector

⟐ Commented April 24, 2026 at 6:38 MST

⟐ Commented April 23, 2026 at 1:49 MST

So I am a noob in repair so i need some help.

I have two iphone 6 from my family i will be happy to fix them.

They fell in swimming-pool so they did not stay more than 45 sec or 1 min in water.

(I do not know exactly it is a long time ago like 6 months)

I will begin to fix which fell in W.C.

So the process to fix:

1)Dissassembly and look for corrosion

2)After put them (but which parts?) in alcohol 90%

3)Let it 3-5 hours to dry it

4)Assembly

5)Try to turn on

6)If it is not turning on,try to a new battery and lightning connector and maybe screen (which is the best order to replace?)

7)If nothing helps so it is the motherboard so it is dead?

I add some pictures because I do not see corrosion so I do not know which part first to replace because the corrosion...

So I put here the process if someone can tell me advices I am a noob.

And also the 3 questions I have I will be happy to receive advices.

Thanks in advance.

⟐ Answered April 21, 2026 at 11:52 MST

⟐ Answer accepted April 21, 2026 at 7:52 MST

⟐ Answered April 20, 2026 at 11:17 MST

i am right now in holidays and my iPhone 12 got a little bit wet. After that it restarts every 3 minutes. So i looked it up and my panic report told me thermalmonitord. How can i arrange now what sensor is faulty? Also is there like a savemode so if i‘m home i could take a backup?

Greetings

{"bug_type":"210","timestamp":"2023-11-27 12:24:34.00 +0500","os_version":"iPhone OS 16.7.2 (20H115)","roots_installed":0,"incident_id":"E97F1F8E-97D5-4524-9CA0-BAE7D1C681B7"}

{

"build" : "iPhone OS 16.7.2 (20H115)",

"product" : "iPhone13,2",

"socId" : "8101",

"socRevision" : "11",

"incident" : "E97F1F8E-97D5-4524-9CA0-BAE7D1C681B7",

"crashReporterKey" : "18855d0161bc64382b6d3c908e65521f32e0b13e",

"kernel" : "Darwin Kernel Version 22.6.0: Wed Oct 4 21:55:46 PDT 2023; root:xnu-8796.142.1.701.11~1\/RELEASE_ARM64_T8101",

"date" : "2023-11-27 12:24:34.99 +0500",

"panicString" : "panic(cpu 2 caller 0xfffffff02c62b8e8): userspace watchdog timeout: no successful checkins from thermalmonitord\nservice returned not alive with context : is_alive_func returned unhealthy : current 5fffffffff, mask 3fffffffff, expected 3fffffffff. SD: 1 BC: 1 RC: 0 BS: 1, Missing sensor(s): Prs0 \nservice: backboardd, total successful checkins in 194 seconds: 19, last successful checkin: 0 seconds ago\nservice: SpringBoard, total successful checkins in 169 seconds: 17, last successful checkin: 0 seconds ago\nservice: mediaserverd, total successful checkins in 194 seconds: 18, last successful checkin: 0 seconds ago\nservice: logd, total successful checkins in 194 seconds: 19, last successful checkin: 0 seconds ago\nservice: thermalmonitord, no successful checkins in 194 seconds\nservice: runningboardd, total successful checkins in 194 seconds: 19, last successful checkin: 0 seconds ago\nservice: wifid, total successful checkins in 194 seconds: 18, last successful checkin: 0 seconds ago\nservice: configd, total successful checkins in 194 seconds: 18, last successful checkin: 0 seconds\nDebugger message: panic\nMemory ID: 0xff\nOS release type: User\nOS version: 20H115\nKernel version: Darwin Kernel Version 22.6.0: Wed Oct 4 21:55:46 PDT 2023; root:xnu-8796.142.1.701.11~1\/RELEASE_ARM64_T8101\nFileset Kernelcache UUID: C5D2A5F46EB1E5A63AF8FDE73B4AD5E9\nKernel UUID: 510BBA43-3466-3323-88BD-6B231BB89712\nBoot session UUID: E97F1F8E-97D5-4524-9CA0-BAE7D1C681B7\niBoot version: iBoot-8422.142.2.700.1\nsecure boot?: YES\nroots installed: 0\nPaniclog version: 14\nKernelCache slide: 0x0000000023fa4000\nKernelCache base: 0xfffffff02afa8000\nKernel slide: 0x0000000023fac000\nKernel text base: 0xfffffff02afb0000\nKernel text exec slide: 0x0000000024d14000\nKernel

⟐ Answer accepted April 20, 2026 at 8:43 MST