Time started jumping ahead one hour a few days ago


New member
Feb 26, 2016
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My phone started jumping ahead one hour. Alarm did not go off this morning, because it must have jumped an hour before it sounded.
Tried: restarting, turning on/off airplane mode, turned off/on Wi-FI, checked auto date & time and Automatic Time zone are checked.
I removed the clock/weather widget.
The only app I have downloaded lately was Norton Anti-virus. Phone is clean. The time will correct itself when I turn on/off airplane mode, but recently it corrected itself before I went to airplane mode.
Is there something I can test to see if it's the phone?
This phone is useless as an alarm clock. I also noticed that my google calendar reminders jumped one hour ahead too. Weird.
Any help would be appreciated