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10월 13일에 발표된 iPhone 12 mini는 Apple iPhone 12의 소형 버전입니다. iPhone 12 mini 특징은 5.4인치 OLED 디스플레이, A14 Bionic 프로세서, 그리고 듀얼 후면 카메라 입니다.

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Phone reboots every 3 minutes, reads 0% battery

My iPhone 12 mini reboots every 3 minutes, reads 0% battery when booting back up, and gives me an "important battery message" saying it does not recognize the battery (even though it is the original battery). This began about a week ago and it was manageable because it would only do the reboot cycling for about an hour each day, and then otherwise would work perfectly fine. Now it has been rebooting for 24 hours straight, I took it to Best Buy but they said since there is likely an electronic issue (as opposed to just a battery issue or a cracked screen) that I would need to pay the full $400 for a replacement as Apple would not repair it. Is there any way I can repair this on my own? Panic log is here: https://pastebin.com/tYQ9HqM0

The beginning of the panic log reads:

{"bug_type":"210","timestamp":"2022-12-10 12:41:36.00 -0500","os_version":"iPhone OS 16.1.2 (20B110)","roots_installed":0,"incident_id":"DA1ADCF7-6310-4067-B197-27E05694571A"}

{

"build" : "iPhone OS 16.1.2 (20B110)",

"product" : "iPhone13,1",

"socId" : "0x00008101",

"kernel" : "Darwin Kernel Version 22.1.0: Thu Oct 6 19:34:22 PDT 2022; root:xnu-8792.42.7~1\/RELEASE_ARM64_T8101",

"incident" : "DA1ADCF7-6310-4067-B197-27E05694571A",

"crashReporterKey" : "22999ebd8a8931d3403ca8f387bbf199608a70a5",

"date" : "2022-12-10 12:41:36.57 -0500",

"panicString" : "panic(cpu 3 caller 0xfffffff014d92ac8): userspace watchdog timeout: no successful checkins from thermalmonitord\nservice returned not alive with context : is_alive_func returned unhealthy : current 7ffffffffc, mask 3fffffffff, expected 3fffffffff. SD: 0 BC: 1 RC: 0 BS: 2, Missing sensor(s): TG0B TG0V \nservice: backboardd, total successful checkins in 202 seconds: 19, last successful checkin: 0 seconds ago\nservice: SpringBoard, total successful checkins in 168 seconds: 17, last successful checkin: 0 seconds ago\nservice: mediaserverd, total successful checkins in 202 seconds: 18, last successful checkin: 0 seconds ago\nservice: logd, total successful checkins in 202 seconds: 19, last successful checkin: 0 seconds ago\nservice: thermalmonitord, no successful checkins in 202 seconds\nservice: runningboardd, total successful checkins in 202 seconds: 19, last successful checkin: 0 seconds ago\nservice: wifid, total successful checkins in 202 seconds: 19, last successful checkin: 0 seconds ago\nservice: configd, total successful checkins in 202 seconds: 18, last successful checkin: 0 se\nDebugger message: panic\nMemory ID: 0x1\nOS release type: User\nOS version: 20B110\nKernel version: Darwin Kernel Version 22.1.0: Thu Oct 6 19:34:22 PDT 2022; root:xnu-8792.42.7~1\/RELEASE_ARM64_T8101\nFileset Kernelcache UUID: 4A09503640DDA5B6CB190C56F359A8AA\nKernel UUID: 6DEA5C10-4F7C-3398-9E18-7C0FE99D27E8\nBoot session UUID: DA1ADCF7-6310-4067-B197-27E05694571A\niBoot version: iBoot-8419.40.112\nsecure boot?: YES\nroots installed: 0\nPaniclog version: 14\nKernelCache slide: 0x000000000c720000\nKernelCache base: 0xfffffff013724000\nKernel slide: 0x000000000d390000\nKernel text base: 0xfffffff014394000\nKernel text exec slide:

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Darn it!
The battery has failed.

And when the repair is done, Don't be alarmed by it saying something like "Important Battery Message" It won't effect anything!

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Guide: iPhone 12 mini 배터리 교체, iPhone Battery Adhesive Strips Replacement

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What makes you say the battery failed? The phone works fine when not stuck in a reboot loop, which makes me think it is a sensor issue, not a battery issue.

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Hi Jolien,

Yeah, I have to agree with @beanman56, your battery is shot. There are two components to the battery; the battery cell itself and the sensors built into the battery. At the very least your sensors have failed. The clue is in the following line of your panic log:

Missing sensor(s): TG0B TG0V

@flannelist has written our definitive guide to kernel panics, and here's the relevant line you need to see

=== Watchdog Timeout or Thermalmonitord ===

Included in its system processes, iOS contains a regular check of sensor input. If it does not hear from these sensors within three minutes, it reboots the phone.

Read past the panic string to find the missing sensor.

  • TG0V and TG0B are a function of the battery.

So yes, it is a sensor issue, but those sensors are in the battery. The solution here is to replace the battery, period.

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Especially with the "Important Battery Message" error, I am liable to agree. The Important Battery message appears when the iPhone cannot verify the battery installed is the one originally installed, or most recently installed by Apple (and paired to the device). I have not ever tried to extract the board from a failed battery, but the battery board is the keeper of this data and also manages sensor data. So this sounds like a double whammy for failed battery.

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