Which cases are best for iPhone in extreme cold weather?

The specified operating range for iPhones (and most other handheld devices, regardless of manufacturer) is 0ºC to 35ºC. And the reason is that is the range at which a Lithium chemistry battery can operate. This is why most winter clothing has inside pockets to keep your phone against your body. You can take it out for a few minutes to use, but most of the time it must be kept warm.

If you live in an environment where it routinely gets to -40º (C or F, as they are the same) you need something very specialized. You probably know more about heated cases (which is what you really need) than we do, as you live in such a climate. Even an insulated case won't really help.

Apple specifics the operating temps for their device and the vast majority of cases are designed to protect the device, in order to do that they need to disperse heat that might cause damage to the device.

Keeping iPhone, iPad, and iPod touch within acceptable operating temperatures - Apple Support

if you need GPS in a -40 c/f you may look into another solution. The iPhone is not designed to function as a GPS in that environment; case or not.

I live in Canada and my phone stops responding in cold weather. I never take it out. That cold, it'll stop responding eventually, and then shut down. Getting it back to room temperature will take at least 30 minutes minimum, so forget about using it. I've been able to use it when it's -15 to -20 outside, but below that, you'll start to have problems. I once had an Android and when it was -35 outside I took the phone out to shoot a text to someone. Right after that happened, my phone shut down. I was not able to use it again for 40 minutes. My phone was fine afterwards by the way.

No case can do this. Otterbox and Lifeproof cases won't be able to help on this one. There are no clear answers because people expect the phone to work no matter how cold it gets. This is not how it works.

Jimmy is right. You might need to look for something that can withstand that kind of weather.

Apple has designed the phone to work within a range of heat and cold but -40 c/f is not one of them; not even close. So heat dispersal it not your issue, but extreme temperature still is. If you were in an igloo attempting to cool an OC'ed CPU 2 or 3 GHz. past it's clock speed you might get stability; but IC chips and other components on logic boards when exposed to extreme cold will stop working. See the unhelpful link I sent from Apple which describe the limits and conditions of the environment necessary for the device to either work or shut down to try and avoid damaging itself; these are not suggestions, they are built into the SDK. The only way around them is to go to another forum and ask how to make your device work outside of the conditions set by the developers and you are not permitted to do that here.

I recommend you go to developer.apple.com and add the suggestion they need an iOS device to work in conditions they were never designed to operate anywhere near and see if they respond. If you are looking for someone with "intimate knowledge" of Apple devices they probably have more years than I do; at least collectively.

Here you go. good luck.

iphone case for extreme cold

Cyberknight13 wrote:

Now I understand if you lack the knowledge to answer that question but please don't flood my post with sarcasm and information not related to my question.

No one is being sarcastic. You're asking how to use an iPhone in a way that it wasn't designed to work. That's all anyone has tried to explain to you.

I suggest that you visit the websites of these cases and sleeves that you know of and review the particulars. Contact the manufacturers. If the cases are available on Amazon, read the reviews.