[Alli]

So today I drove from the eastern time zone back to the central time zone. Only my iPhone 4 stayed on eastern time. I had to change it to manual, find somewhere on the same time zone, and then switch back to network.

Anyone else seen this yet? Fluke? Bug?

[Mustang5Oh]

cant answer for the iPhone 4 but my 3G did that before and it eventually fixed itself.

[big9erfan]

I find usually a restart usually fixes that kind of issue.

[Alli]

Never had a problem on the 3GS. It would switch just fine, twice a day if need be.

[Leanna Lofte]

I flew to CA and back (Denver) this weekend and my iPhone 4 correctly updated the time.

[Alli]

I wonder if it makes a difference that the phone is off when you cross the line? (Since obviously your phone was in airplane mode.)

Oh well...not gonna worry about it until the next trip!

[Ariyala]

I crossed time zones yesterday morning - not sure about the i4 yet - but on my 3G it changed on its own.
Settings > General > Date & Time > Set Automatically turned to "on"
Maybe that's it?

[scottdoc718]

I had issues last year when I made a cross country road trip with my 3G. We crossed 1 time zone per day and each morning the alarm woke me up an hour early because it didnt update the hour. I think it may have even switched back and forth in confusion, because I checked it before I went to bed each night. Good thing I was going West and not East.

[WcHorse]

I went from Eastern to Central and it changed but it never changed back to Eastern when I came back into Eastern. Powered phone off and back on and I was good to o!

[Alli]

When I drove east from central to eastern, the iPhone 3GS changed on its own. I purchased the 4 while in the eastern time zone, and when I drove home to central time, it didn't change - even though it was set to use network time. <shrug>