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4-inch iPhone released in March 2016 with similar hardware specifications to the 6S. Available in Silver, Space Grey, Gold, or Rose Gold with 16/32/64/128 GB storage options. Model: A1662 and A1723

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Rebooting every 180s - thermalmonitord / sensor TG0B

After having replaced the battery (non-genuine from a trusted seller on eBay), my iPhone SE constantly reboots (seems like every 180s). Took a look in the crash logs and found that the phone is kernel panicking. The error message is something like „no check-ins from thermalmonitor.d since load for 180s“ followed by „missing sensor(s): TG0B“. Also, I am unable to view the battery health in the settings - it only shows a spinning wheel forever.

Unfortunately, I couldn’t find anything related to this sensor. There are some posts on iFixit regarding thermalmonitord crashes already, but other sensors (which are supposed to be related to the charging flex). I didn’t touch the charging port though.

However, I had to apply a lot of heat in order to get the original battery out (used a microwaved washing cloth) - hoping I did not melt anything else in the process.

Does anyone know what the sensor TG0B is and how to fix this? Would another battery work? The old did work before, but after having removed it it’s very bent and I would prefer not to install it again to test, so I’d have to get another battery first.

Answered! View the answer I have this problem too

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Did you manage to get it working? Have an iPad with same TG0B error...

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I had same issue on my iphone se i have change my battery 2 times but same issue appears .what does TG0B means?

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Just open your phone romove the screen and remove the battery cable and rub it with fingers and put it again and make sure it fits right at place and then press it a bit and you’re ready to go it’ll not happen again ! Thank me later

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While replacing the battery you have nudged a component next to the battery connector. If you have no experience in microsoldering you will need to take it to a reputable repairer.

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I have the same problem after having replaced the display - plus the battery now stops charging at 13%. Where exactly is the component that might be damaged? I do not see many elements next to the battery connector. What part do I need to replace in case soldering is not possible?

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@imicrosoldering hello, I have the same problem on an iPhone X, already tried a new battery and a new charging flex.

Do you know the component that cause this on iPhone X?

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You probably damaged something while in the microwave.

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In my case, the problem sloved by using another battery (no TG0B message anymore)

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On my case (iPad 6), just replacing battery didn’t solve the problem. Took it to a repair shop where they identified the problem as the Charging Controller CI. Replacing it solve the problem.

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Maximilian Krause will be eternally grateful.
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