[time-nuts] Handy iPhone app

[Bob Camp]

Hi

Here in Carlisle PA the same check shows the iPhone 3G  "within a second". That's running 3G, with no odd settings on the phone.

Bob


On Jul 16, 2010, at 3:06 AM, Rex wrote:

> I'm in San Jose. (Same Bay you are talking about?) I am on AT&T but I have a Motoroloa Razr that's at least a couple years old.
> 
> I just checked the phone's displayed time vs the internet and also my GPS receiver. I just eyeballed the minute turn-over but it was clearly within about a second. Good enough for me on my phone. So, at least here where I am, AT&T time is not off by even a couple seconds. Maybe the issue is another iPhone problem. Do you have any friends on AT&T with Motorola phones you can compare?
> 
> -Rex
> 
> 
> Peter Monta wrote:
>> Here in the Bay Area, AT&T/iPhone time has gotten noticeably worse
>> recently.  The error used to be around 4 seconds; now it's 49 seconds (!).
>> 
>> Emerald Time is fine for interactive use, but what I find very impolite
>> is that AT&T's bad timestamps are written into the EXIF headers on photos.
>> Sometimes I take pictures of sundials, for example, and a 49-second
>> error is not negligible for a carefully made dial.
>> 
>> It would be amusing to arrange for a long-term record of the offset of
>> one's phone (which can of course change across multiple providers during
>> travel), say by using a background process to take a sample every few hours
>> against NTP sources or against GPS if the phone has it (or both).
>> Then any photos can be batch-corrected later if desired.  Apple, give
>> me control over the time on my own phone, and please don't force me to
>> resort to these schemes :-).
>> 
>> Cheers,
>> Peter Monta
>> 
>>  
> 
> 
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