Phone batteries are fine down to -20C and usually are functional to about -30C.
You should have no problem with that anywhere in the world as long as you keep it in an inner pocket. Perhaps pack wired earphones just in case you need to make a long call while keeping the phone itself warm.
Notably the battery should not be charged below about 5C. If you do, it will be permanently damaged.
You should have no problem with that anywhere in the world as long as you keep it in an inner pocket. Perhaps pack wired earphones just in case you need to make a long call while keeping the phone itself warm.
Notably the battery should not be charged below about 5C. If you do, it will be permanently damaged.