Who I have the same questioned this topic

Arizona doesn't participate in Daylight Saving Time. (We already have more than enough sunlight in the summer, thanks anyway!)

If your Verizon phone is set to use automatic, network-provided time zones, you will get mountain daylight time starting next week. You may have already noticed weirdness in your calendar appointments. And if you've got an alarm set for Sunday morning, it will go off at the wrong time.

Go into your settings now and change the time zone to manual, GMT-7 Phoenix

(in Android this is under Settings -> System -> Date & time ... )