You can select the behavior you prefer...

Settings>General>Date & Time.  You can set it manually or have it set
automatically based on your current location.

Leaving to "automatic" uses a surprising amount of battery power.



On Mon, Aug 4, 2014 at 3:16 PM, Bob Camp <[email protected]> wrote:
> Hi
>
> I *think* it’s even more specific than that. I’ve watched it switch time 
> driving down the road in Indiana. As we did zig zags over the time zone line, 
> the iPhone quite happily changed displayed time. My guess was that it used 
> GPS location info to decide which side of the line it was on.
>
> Bob
>
> On Aug 4, 2014, at 1:19 PM, Glen Hoag <[email protected]> wrote:
>
>> As someone who crosses time zone boundaries with relative frequency, I can 
>> tell you that the iPhone does indeed set it's time zone automatically, based 
>> on information the phone gets from the cellular network.
>>
>> Sent from my iPhone
>>
>>> On Aug 4, 2014, at 11:49, Chris Albertson <[email protected]> wrote:
>>>
>>>> On Mon, Aug 4, 2014 at 5:38 AM, BIll Ezell <[email protected]> wrote:
>>>>
>>>> Clearly, just using something like NTP directly isn't all that useful
>>>> because you have to know your physical location to know what timezone
>>>> correction to appl
>>>
>>> I'm pretty sure you have to set the time zone that is displayed.  It
>>> does not change based on location.  Although one col writ an app that
>>> would do that.  There are MANY clock apps some show multiple time
>>> zones.  Interannly the phone uses GMT (offset zero)
>>>
>>>
>>> --
>>>
>>> Chris Albertson
>>> Redondo Beach, California
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-- 

Chris Albertson
Redondo Beach, California
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