I own iPhone SE and let's be honest, this phone is designed for people living in warm climate, not someone living in nordic countries. If it's around zero degrees celius or less, then you better not take your phone out of your pocket. The battery will uncharge and phone will shut off(sometimes in matter of minutes). I thought there was something wrong with my iPhone, but it turns out the battery can't stand the cold.

-- edit Otherwise I love iPhone SE. It's almost perfect.