A blogger of Xiaoji recently returned to Tianjin and found that several smart phones used were not acclimatized to the local conditions and had problems, mainly including battery durability, slow response to calls, delayed response of LCD screen, and flashing screen. In fact, it is not an exception that mobile phones and other electronic products are not resistant to freezing. For example, last winter, many people reported that their iPhones or iPads could not be charged due to cold weather. On Apple's official website,