Originally Posted by garyblake
Yesterday my phone got very cold (as i did as well) then it froze up on me. This is understandable and maybe should be taken into consideration while undervolting. Colder chips need a bit more juice as the resistance is higher.
Right, but if you cool ANY conductor to low enough temperature you get superconductor that offers NO RESISTANCE at all
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I hope you are not talking about extremely low temps as in -10 or -20C for example as they are outside of specified operating temperatures for the phone. There are problems with too low temps but not due to resistance but thermal compression where materials loose connectivity.
If I remember correctly, the main problem with phones are batteries that will not supply correct voltage when in very low temperature, it is not a problem so long as the battery is actively working because when discharging it will heat up, but when the phone is in deep sleep for a long time and in low enough temperature, it may just happen to stop working correctly. Now add on top of that higher resistance of semiconductor in the chip and you get a recipe for disaster
I remember something about Iphone refusing to even turn on when the phone was too cold....
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