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by pmjordan 3027 days ago
This may be obvious, but when it's cold out, it helps to keep the phone in a warm pocket close to the body (e.g. on the inside of your coat) rather than a bag or so. I've never had any issues with iPhones that way; using it for more than a short period of time when it's very cold is unpleasant anyway, so it never gets the chance to cool down too much. (I can confirm this works even at -40°, although you've got to be very careful with charging cables at that sort of temperature. Don't try to bend them, they'll snap.)