iphone time disorder US daylight saving Day system trouble

According to the Beijing News, the United States entered daylight saving time from 2 o'clock in the morning local March 13, one hour ahead of standard time.　　Many iphone users complained on the day that their mobile phone time was in disarray. The United States daylight saving time from March the second Sunday to November of the first Sunday. The time difference between China and the United States has changed from 13 hours in winter to 12 hours. Some iphone users said in Sunday that their phones "forgot" the ability to tune in to daylight saving time on the same day.　　Another user said that the mobile phone time instead of 1 hours, resulting in the display of time than the actual time two hours slower. In addition, American States decide whether to use daylight saving time, such as Arizona, State and Hawaii, but some iphone users in those areas say their phones are automatically adjusted to daylight savings, triggering a series of disruptions.