Skip to main content

Released September 20, Apple's mainstream 2019 iPhone comes with a 6.1" LCD touchscreen, dual cameras, and six available colors. Successor to the iPhone XR.

502 Questions View all

iPhone 11 REBOOT LOOP - THERMALMONITORD

Dear all,

 

I have some trouble with my iphone 11, this one reboot 2 or 3 minutes after starting. If i don’t use it after the starting, this one doesn’t reboot…. (I have replace the rear glass this one worked fine before replacement)

I try to :

Restore and Update iOS : No result !

Try to disconnect all accessoiries on the logic board : No result !

When i go to the log files, it look like one of the sensor is missing and make the phone reboot !

reason" : "(1 monitored services unresponsive): checkin with service: thermalmonitord returned not alive with context:\nis_alive_func returned unhealthy : current 3fe3bfffffffffff, mask 1ffffffffffff, expected 1ffffffffffff. Missing sensor(s): mic2 \nno successful checkins since wake (120 seconds ago)",

Do you know where is the sensor ? « MIC2 » Wich flex need to be replace ?

If you want i can share you the log files.

 

Thanks in advance,

 Best regards

Answered! View the answer I have this problem too

Is this a good question?

Score 8
5 Comments

I have same issue .Replaced power flex checked the microphone, it is working fine but mobile restarts after 120 seconds.Did your problem solved after changing lighting connector ?

by

I had this issue the only way to fix it is to replace it with an original cable from another phone, these part replacements you use from China won’t work. Depending on the error you either need to replace the power button/flash light flex or the charging port

by

Thanks man , I had the same log " Missing sensor(s): mic2 \nno successful checkins since wake (120 seconds ago) " I used china power button /flash/mic flex and issue is not resolved yet.I think that would be the issue in my case.

by

Replaced power button flex cable and all goes well and my error was: Missing sensor(s): mic2

by

Mirko Cavasino did you ever resolve this problem ?

by

Add a comment

7 Answers

Chosen Solution

I finally found the problem by myself. This trouble have done by the lighting connector (Damage during the rear glass replacement) I have bought new one but not original : SAME PROBLEM. I finally bought original cable : Everything work as well !

I you have this problem bought original flex cable ….

Was this answer helpful?

Score 3

6 Comments:

hey, can you do me a favour? take off the lightning connector and boot, then check what sensors are reported missing. I keep getting "missing sensor(s): Prs0" but I don't know where Prs0 is, already got a new $100 battery but that didn't fix it, prs0 is still reported as missing

by

Did you find a fix ? I am getting prs0

by

PRS0 is Pressure Sensor which is on Charging port. Charging port must be connected when powering on... it will not pass check and reboot after 180 sec

by

Hello I have this same probably. Can I Know the exact part you replaced. I mean the name as I would like to purchase it.

by

Original parts speically power button and charging both must be connected to avoid restart iphone 11 after 2:55 sec or 3 mints spent a day to figure it out

by

Show 1 more comment

Add a comment

Iphone 11 Same issue i got and its second one after simple glass replaced by leiser machine was done and now restart after 2:25 sec i have replaced charging block with an original one twice still restarting flash light got damdge by removing the glass i tried original flash light aswell still same stuck now any can suggest a solution which work rather than do this and do that becoz i have done eveything else i dont want wipe the phone unless its last resolt

Thanks

Was this answer helpful?

Score 0

1 Comment:

I did figure it out iphone 11 restating after back glass replacement i damdge the flash light and i was using the copy one and that's was my issue i used an original part and it worked but when you do test it power button+charhing block Both MUST be connected either of not connected phone will restart so what ever who ever got this issue do the same POWER BUTTON +CHARGING BLOCK BOTH must be connected

by

Add a comment

Mic 2 is the power flex cable.

Mic 1 is the charging port.

Simply removing/unplugging will still give the same error (missing sensor) because it is missing if it's unplugged.

Youll have to replace with a genuine pull, or high quality replacement.

Open the phone, plug the new power button flex to test, then install.

Was this answer helpful?

Score 0
Add a comment

I just had this same issue with a water damaged iPhone 11, panic showed error on sensor prs0 but the problem was in the volume flex due to rust and shorted i2c1 lines in the same connector.

Was this answer helpful?

Score 0
Add a comment

I have this same issue that shows mic2 missing sensor any idea on how to resolve it your help would be much appreciated.

Was this answer helpful?

Score 0
Add a comment

I encountered a similar problem, the rear glass damaged the flash and had to restart the problem. I have replaced a genuine manufacturer but the problem cannot be solved. My phone still reboots. does anyone have another guide to help me? thankS

Was this answer helpful?

Score 0

1 Comment:

its the power button or chrging port neither motherboard issues

by

Add a comment

Hey Guys I got a similar Problem. I changed the damaged Backhousing with a cheap one (China, pre installed Lightning+Power+Louder+Antenna Flexes) of a Iphone 11 and got the same issue, restart after 180sec.

In the Paniclog there was the missing sensor Mic2. So I bought a Original Power-Flex from ebay, but this was not the solution. Could the new one also be faulty?

Should i also replace the other pre installed flexes? Or could it be the Motherboard?

Was this answer helpful?

Score 0

3 Comments:

I had the similar problem still currently going on. My phone got seriously water damaged and they replaced the camera, board, speaker flex and screen and it still keeps rebooting, how is this gonna be rectified?

by

@Shian Ramdial, what error are you getting in the panic log? You need to identify which sensor is causing the reboot before you can determine what needs to be fixed.

by

I believe they think it’s the power button flex what’s causing the rebooting

by

Add a comment

Add your answer

rossi will be eternally grateful.
View Statistics:

Past 24 Hours: 12

Past 7 Days: 112

Past 30 Days: 489

All Time: 35,889