Chosen Solution
Restarts every 3 minutes, Panic-full logs mention “missing sensor(s): Prs0” Panic full log: https://pastebin.com/MVKxS4h4 This phone has had the screen and housing replaced, people on reddit suggested changing the battery but that didn’t fix it, thinking of changing the lightning port flex cable. any idea about where exactly is the “Prs0“ sensor? Thank you, any help is greatly appreciated.
It’s a sensor that’s on charger port on original called “thermalmoniord” this sensor is not on the generic charger ports that are sold. The “thermalmoniord” when missing the phone counts down 3 minutes then reboots. The way you can check if it’s the sensor it’s looking for is look at the error log on the phone or keep locking and unlocking the phone. If the phone doesn’t reboot it’s because the generic charger port don’t have a thermalmoniord sensor on it.
prso is a pressure sensor usually on the charging flex
Hi, A very common issue with the iPhone X series and 11, is a tiny bit of water landing on the proximity sensor. This usually causes the phone to reboot all the time. The proximity sensor is on the flex cable that has the earspeaker attached to it. Simply disconect it, and leave it disconected for now. Boot the phone and see if the phone still reboots after 3 min. If it does not, then that is probably the issue. Replace the proximity flex cable. Note: the proxi is part of the faceid circuit and you will loose that functionality, if you replace that part. You can transfer or repair the original proxi if you can micro solder. If disconecting the proxi did not fix it, disconect everything besides the screen, battery, and power button. Boot the phone and test for bootloop. If the bootloop is gone, start recconecting parts one by one while testing for bootloop. You will find the part at fault. If it still bootloops disconect the power button and connect the port instead, and prompt to boot via the port and test again. If the problem is still there, you have narrowed it down to the motherboard. I hope this helps
Barometric Pressure Sensor on Port
Just an update to this, replaced charging flex and power flex and both errors gone.
My son’s iPhone X started rebooting every 3 minutes. It started a few ago. He used it fine the night before and on Wednesday morning he started to use it and it began rebooting. I started investigating it and discovered the thermal messages in the log file. It’s referencing mic 1. I have an appointment at the apple store later today. Apple told me that they believe it was the motherboard and it would be an out of warranty repair. I installed Panic Log Analyzer and it says Possible issues: Charging Port Flex and Power Button Flex panic(cpu 0 caller 0xfffffff013ff70f4): userspace watchdog timeout: no successful checkins from thermalmonitord since load service returned not alive with context : is_alive_func returned unhealthy : current 73fffffffff, mask 67fffffffff, expected 67fffffffff. SD: 1 BC: 1 Missing sensor(s): mic1
I have the same panic after 3 minutes and reads both mic2 and Prs0 in log. will this mean both the power/flash flex and charging port are fried?
Something happened to me when I was repairing the iPhone X I damaged a piece of the main camera’s FPC connector and in the upper left corner of the main circuit board a piece of the plating is gone (copper shows through). The device works perfectly except for one error that I couldn’t find anything about on the Internet: A kernel panic with thermalmonitored error and missing sensor TP1A I couldn’t find anything about the TP1A. It will probably be near the camera connection? After unplugging all components, the error still occurs and the device restarts every 3 minutes. But there was a short time when loading, the device didn’t restart for 1 hour? Could someone enlighten me more about the TP1A?
PRSO means a problem with to pressure sensor that is on charging flex. Replace with good dock flex otherwise, the problem can’t be fixed. The same problem that I got on iPhone 12 pro max with the same restart on 3 minutes problem with that log. I replace it with from doner iPhone and the problem was solved. If you use new aftermarket be aware of good quality. You can try flex from iFixit.
How do you guys read the logs? I Have a 12 pro max, replaced the battery… phone started rebooting after.. if its locked it stays on but if we began to use it starts rebooting
Can some show where the sensor is physically located on the flex cable? When doing full houding repair I often break the original flex when removing. Physically no visible damage but I see to break the sensor. How to avoid this when removing the flex?
