[OSX-Users] Re: iPhone 3.0 battery life?

[Tim Chown]

Thanks Hugh, have turned off push mail, will see how that helps.

I used to be able to go 3-4 days without recharge, with 3.0 it's 24 hours
or so instead.

I'd rather not use power/charge unless I need to.

On push/vs pull, I am happy to manually pull mail when I want to.

Tim

On Sun, Jul 19, 2009 at 05:07:02PM +0100, Hugh Glaser wrote:
> On 19/07/2009 16:52, "Ben Hodgson" <bmjh106 at ecs.soton.ac.uk> wrote:
> 
> > Doesn't both push and polling operate over any old standard TCP/IP connection
> > (which AFAIK the iPhone has)?
> > 
> > Disclaimer: I'm getting into "I'm not 100% sure what I'm talking about"
> > territory.
> Welcome to my planet.
> 
> http://www.apple.com/batteries/iphone.html
> says:
> Optimize Your Settings:-
> Turn off push mail: If you have a push mail account such as Yahoo!, MobileMe
> or Microsoft Exchange, turn off push when you don¹t need it. Go to Settings
> > Mail, Contacts, Calendars > Fetch New Data and set Push to Off. Messages
> sent to your push email accounts will now be received on your phone based on
> the global Fetch setting rather than as they arrive. If the global Fetch
> setting is set to Manually, you will not be able to locate your iPhone using
> the MobileMe Find My iPhone feature.
> 
> I'm pretty sure that when I installed 3.0 I was getting seriously reduced
> battery life until I switched it off (although that was a beta version).
> In normal usage it doesn't actually connect up unless it feels it needs to,
> as far as I can tell, irrespective of the time setting.
> Given the arrival frequency of email I get, switching off Push must be a big
> battery win.
> 
> And Tim, if you have Push switched on for other apps as well, it may be even
> worse.
> 
> Cheers
> Hugh
> > 
> > -- Ben
> > 
> > 
> > On Sun, Jul 19, 2009 at 4:48 PM, Marcus Cobden <mc08r at ecs.soton.ac.uk> wrote:
> >> 
> >> On 19 Jul 2009, at 16:35, Philip Boulain wrote:
> >> 
> >>> Hugh Glaser wrote:
> >>>> I think you may find that "push" is on by default.
> >>>> If you switch it off, going back to polling for email...you may get
> >>>> back to "normal".
> >>> 
> >>> That seems odd. Isn't the point of push mail that it's more
> >>> efficient, avoiding the need for the phone to keep transmitting
> >>> "Hey! Do I have any mail yet? What about now? What about now?"
> >> 
> >> The design choice probably came down to cost.
> >> It's cheaper and easier to code it that way than to ask the carriers
> >> to invest in new hardware and software updates on their networks so
> >> they can do it right.
> >> 
> >> 
> > 
> > 
> 
> 

-- 
Tim