Slightly OT - Apple OS4 on 2G Touch ...
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From: Arfa Daily on 26 Jun 2010 07:44 "Jeff Liebermann" <jeffl(a)cruzio.com> wrote in message news:lnma26dmqrgiadt84614qsa9emqj636fo9(a)4ax.com... > On Fri, 25 Jun 2010 09:21:15 +0100, "Arfa Daily" > <arfa.daily(a)ntlworld.com> wrote: > >>Not jailbroken. Just off-the-shelf vanilla. > > So much for that theory. > >>I don't knowingly have huge amounts - if indeed any - Google Apps on it. >>Although thinking about it, I do have Google Earth, but it hasn't been >>opened since the update. > > Google Earth should not cause problems. It's only Google Mail and > possibly Calendar that might need to sync huge amounts of data. > >>For the moment, I'm going to leave the wifi and location services switched >>off, and see what happens. If that is ok, then I will put the wifi back >>on, >>and see how it goes then, and report back. > > iPhone and iPod touch: Understanding Location Services > http://support.apple.com/kb/HT1975 > > The iPod Touch does NOT have GPS or 3G data. However, it can use > Wi-Fi to obtain locations. I usually leave location services off on > mine to save electrons. I just turned it on, fired up Google Maps > while indoors, and it found me within about 300ft. Nice. However, > there's no additional drain other than Wi-Fi. When the iPod Touch > goes to snooze, the Wi-Fi goes into standby. I don't think this is > the source of your mystery discharge. > > > > -- > # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 Agreed, the wifi *should* go to standby when the iPod sleeps, and I'm sure that it did with the previous version of software that was on the device, but I'm not yet convinced that it is doing so correctly, with iOS 4, so at the moment, I'm still checking battery drain with various settings on or off, and the jury is still out on this one ... Arfa
From: Arfa Daily on 26 Jun 2010 07:48 "Jeff Liebermann" <jeffl(a)cruzio.com> wrote in message news:41oa26p5tcar7cqqnpma2hsijuapth6bc6(a)4ax.com... > On Fri, 25 Jun 2010 18:51:35 -0700, Jeff Liebermann <jeffl(a)cruzio.com> > wrote: > >>iPhone and iPod touch: Understanding Location Services >>http://support.apple.com/kb/HT1975 > > Incidentally, the iPhone and iPod Touch Wi-Fi based location services > uses Skyhook: > <http://www.skyhookwireless.com> > which uses a database of known wi-fi access points. It found my > office location because I had registered my access point long ago. > > > -- > # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 I think you'll find that Google know about an awful lot more wireless access points, than just ones that have been registered. There's recently been a big privacy hoo-hah over here regarding the fact that when Google drove their camcars round every street in the country, as well as taking pictures, they also continuously sniffed wireless access points, and logged their locations, and every bit of data they could gather from them. Big Brother cometh, or what ... Arfa
From: Meat Plow on 26 Jun 2010 12:02 On Sat, 26 Jun 2010 01:16:20 +0100, Arfa Daily ǝʇoɹʍ: > <snip> > >> I had a similar situation with my Blackberry. When they updated the OS >> the bluetooth suddenly ate the battery in about 10 hours. Before the >> phone could go for a week on standby. So I ended up disabling the BT >> until needed. About 3 months passed and there was a software update >> that addressed the BT issue and it worked. I was screwing around with >> my sister's ITouch yesterday. Nice little unit for sure. But now I own >> a Dell Mini and no longer desire an ITouch for myself. I wouldn't have >> been happy with something that was only half a computer anyway. > > Well, I reckon that I've just about got it pinned down now. Unit idled > asleep all day, and battery went down about 2% or so, so that was back > to normal. So this evening, I turned the wifi back on, and connected to > the TV news site that I use, then exited that app, connected to the > iTunes store and had a little browse, then exited that app. I then left > the unit for another couple of hours, and rechecked. The battery was > just as I had left it, so the wifi had correctly gone back to sleep, > when the online apps were exited. A while ago, I started up The Weather > Channel desktop app, which I suspect is at the bottom of the trouble, > and accessed some data. Now this app asks for permission to determine > your location, via the 'net, by making use of the router data that > Google have stolen from you, as they drove past your house with their > camcars.. I usually just let the app go ahead and do this. Tonight, it > had a bit of a cry that it couldn't ask me, because "Location Services" > were turned off on the iPod. Having looked at a weather forecast, I > exited the app, and again, all seems to be well. > > So, I'm now pretty sure that the issue is to do with this location > determining malarky. If for whatever reason, it doesn't manage to > complete the operation, it looks as though it keeps trying, which would > be fair enough whilst the app is running. To be honest, I don't know if > this has ever worked, because I don't actually know why the app needs to > know where I am. Assuming that it doesn't complete, and keeps trying, it > looks as though with iOS 4, the operation doesn't get cancelled when you > exit the app, so the wifi transmitter stays active, rinsing your battery > in a few hours. Presumably, this is an oversight / bug in iOS 4 that the > previous version didn't have. I can't see any reason for the wifi > transmitter staying active after an app has been dumped. As soon as you > exit, any wifi activity associated with the app, should be immediately > tidied up, and dropped. > > I think that for the moment, I'm just going to keep location services > shut off, and if I load up any apps that definitely need it, decide on a > per use basis whether to re-enable it. > Looks as you've isolated it. I disable BT on my phones unless needed. Makes a significant enough impact on idle time to do so. Disabling the wifi on my Dell Mini gives me roughly 30% more battery life. I often take it with me when I go looking for things to photograph. Pull the SDHC card from the camera and insert into the Mini and review them. Don't need radios rinsing the battery when I'm out in the middle of nowhere. And I often ride the Harley when I go nature photogging :) No cig lighter power supply on it.
From: Arfa Daily on 26 Jun 2010 20:31 > > Looks as you've isolated it. I disable BT on my phones unless needed. > Makes a significant enough impact on idle time to do so. Disabling the > wifi on my Dell Mini gives me roughly 30% more battery life. I often take > it with me when I go looking for things to photograph. Pull the SDHC card > from the camera and insert into the Mini and review them. Don't need > radios rinsing the battery when I'm out in the middle of nowhere. And I > often ride the Harley when I go nature photogging :) No cig lighter power > supply on it. > I've definitely isolated it now. It wasn't the "Location Services", it was "Notifications" as someone else suggested it might be. I now have wifi set back "ON" and location services set back "ON", and everything is just fine. Battery life is absolutely normal. As soon as you switch "Notifications" back on, the battery rinsing starts. I haven't a clue what it is for, and I'm sure I don't remember seeing it being on, or even actually there ?? in the previous version of OS that was installed before the iOS 4 upgrade. Anyway there is no problem with operation or battery with it off, so off it will stay ... :-) Arfa
From: Jeff Liebermann on 26 Jun 2010 22:54
On Sun, 27 Jun 2010 01:31:41 +0100, "Arfa Daily" <arfa.daily(a)ntlworld.com> wrote: >I've definitely isolated it now. It wasn't the "Location Services", it was >"Notifications" as someone else suggested it might be. I now have wifi set >back "ON" and location services set back "ON", and everything is just fine. >Battery life is absolutely normal. As soon as you switch "Notifications" >back on, the battery rinsing starts. I haven't a clue what it is for, and >I'm sure I don't remember seeing it being on, or even actually there ?? in >the previous version of OS that was installed before the iOS 4 upgrade. >Anyway there is no problem with operation or battery with it off, so off it >will stay ... :-) <http://support.apple.com/kb/HT3576> Push Notifications are messages from applications that go merrily out to the internet to see if there's anything worth bugging you about. The notifications can appear BEFORE you smear the screen with "slide to unlock". Under Nofifications, I have eTrade and eBay notifications enabled on mine. I get plenty of notifications from both of these apps. However, it doesn't kill my battery. I leave 15 minute Notifications on continuously, and my battery level is roughly where I left it the previous night. No unusual drain from Notifications that I can see and I have a rather old battery. If you don't see any applications listed under Notifications, then turn it off. You don't need it. If you do want the listed apps to bug you when appropriate, leave it on. -- Jeff Liebermann jeffl(a)cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |