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What is the operating temp of the Axon 7 supposed to be? I've had issues with it in temperatures below 30F where the battery percentage will rapidly drop down to 0% and then it shuts off. When it warms back up indoors the battery percentage jumps back to where it was originally and functions normally. I just went for a walk in a 28F environment and the phone had a 42% charge, dropped to 0% in 4 minutes and then was done until it warmed up indoors.
I've owned a lot of phones and never had one so sensitive to cold weather. Had I needed it on my walk for an emergency I'd be out of luck, I don't trust it anymore.