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Hey, So I have this iPhone 11 and its giving a fake hot warning. If I disconnect the power button it will boot up but after 3 minutes it will restart and so on. At least I can do panic logs but in the panic logs it will only show the the faults on the power button (i think). NAND, Button power, wifi and another one which I don’t remember. Or is there any way I can check the panic logs even with the phone on the hot warning message? Can anyone help me out trying to solve this problem? Thanks!
This type of problem is hard to diagnose over the internet. If it landed on my bench I would remove and install the logic board into a known good housing this would rule out or confirm if it’s a parts issue or a board issue but unfortunately this is not feasible for most people. When it comes to temperature warnings the first thing I would be looking for is NTC lines “Negative Temperature Coefficient” The NTC circuits I would rule out first are: · Lattice Projector. · Power button. There are other NTC circuits that can also become faulty due to cracked or torn pads between the two layers of the board. However I would defiantly try replacing the power button flex assembly first as this would be the most likely culprit. You could also try and boot with the lattice projector disconnected but I cannot remember if this will cause it to restart.
@repairedit, I have to respectfully disagree that the panic logs aren’t needed; indeed, there are many problems being submitted to this site that could only be solved using the panic logs; I’ve personally fixed my grandson’s iPhone X when the panic log correctly pointed me to the lightning port assembly being bad. @joaodiogo, Please take a screenshot or download of any panic logs you have present on your phone; the first page of each is usually sufficient, but full logs won’t hurt. Add them to your question and we’ll help you track down the issue. That three minute reboot cycle is a key piece of information, as that’s exactly how often the iPhone scans its sensors, so at the very least we should be able to get your reboot problem fixed, and hopefully the false overheat issue as well. Adding images to an existing question - iFixit Repair Guide Here’s a page showing how to use a couple of different tools to read phone status and panic logs; I’m not familiar with the first one listed but have used 3uTools. How to fix an iPhone that keeps restarting - Panic Log and iDeviceLogAnalyzer
Hi João, Taking a look at the missing sensors, you’re right that there’s at least one of them that’s a direct result of the power button being disconnected; the mic2 sensor is on the power flex, so that one’s to be expected. However, there are a couple others that shouldn’t be there under those circumstances. The Prs0 sensor is on the charge flex and shouldn’t be affected by the power button flex. Also TG0B and TG0V are battery sensors that you shouldn’t be seeing either. Here’s some relevant information from @flannelist’s excellent iPhone Kernel Panics Wiki page.. To get to cause, keep reading past the panic string to find the missing sensor. PRS0 and Mic1 are genrally part of the charge port flex.Mic2 is in the power button flex in most models.TG0V and TG0B are a function of the battery. For the 11 Pro and Pro Max, these may also point to a bad charge port flex due to the second connector on these batteries. At this point you appear to be looking at defective parts on the charging port assembly, the power button assembly, and the battery. To be honest, if it was my phone I would try replacing those parts, but unfortunately there’s another explanation for the huge number of errors you’re seeing, and it’s not good. It’s entirely possible that the interposer, the part that connects the two boards that make up the logic board, has broken loose and damaged/disconnected some of the signals that are supposed to be passed between layers. While that kind of damage is repairable, it requires specialized equipment to separate the boards, fix any broken traces, reball the solder pads and then heat the entire assembly to solder it back together again. Definitely a job for a board repair house; I think of myself as a fairly expert DIY repair guy but I’d never even consider trying that repair.
Press and quickly release the volume up button. Press and quickly release the volume down button. Then, press and hold the side button until you see the recovery mode screen. You will then need to connect your iPhone to your Mac or PC and open iTunes and when prompted press restore. If that does not work you may have a bad battery. Hope this helps! Edit: You should not need the panic log to solve this problem FYI. Owen
