[time-nuts] iPhone keeping better time?

Robin Kimberley robkimberley at btinternet.com
Thu Nov 17 11:32:35 EST 2011


I'm currently using a Samsung Galaxy S II, which I'm very impressed with.
Have just found an NTP client on the Android Market which seems to work OK. 

Will investigate further.
Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Albertson
Sent: 16 November 2011 18:35
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] iPhone keeping better time?

I doubt we will ever see good time keeping on an IOS type device.  The
problem is battery life.  Good time keeping requires a  stable local
oscillator of some kind that must remain powered up 24x7.   But to get
the long battery life they must power off everything they possibly can.  No
mater how far technology advances it will always require less power to not
ruin an oscillator then to run one.

I doubt Apple would run NTP in an iPhone.  They don't want to multi task the
CPU and there is no stable  local oscillator to be disciplined.

On Wed, Nov 16, 2011 at 10:21 AM, David J Taylor
<david-taylor at blueyonder.co.uk> wrote:
>> It's even worse on the WiFi iPad - there is no way to automatically 
>> set the time.  You can only do it via the "Settings" page and that 
>> only gives you minute resolution.
>>
>> The Emerald-Sequoia app is nice, but since it can't actually "fix" 
>> the time, every app that has time constraints has to do its own NTP.
>
> Criminal, really!  Even SNTP would be better.  I had hoped it would be 
> fixed in iOS 5.0 as I'd seen it discussed in the beta groups.
>
> David
> --
> SatSignal software - quality software written to your requirements
> Web:  http://www.satsignal.eu
> Email:  david-taylor at blueyonder.co.uk
>
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-- 

Chris Albertson
Redondo Beach, California

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