http://tidbits.com/ After updating to iOS 6, Adam Engst’s iPhone 4’s battery life dropped precipitously, and worse, the problem moved to his new iPhone 5 once he restored the iPhone 4’s settings to it. Read on for his solution, but beware, it was a bit of an ordeal, and you might not like what you have to do. en-us Copyright 2012 TidBITS Publishing Inc. Thu, 03 Jan 2013 00:00:00 EST Thu, 03 Jan 2013 00:00:00 EST editors@tidbits.com (TidBITS Editors) editors@tidbits.com (TidBITS Editors) http://tidbits.com/images/tb_logo_152x55.png http://tidbits.com/ 55 152 TidBITS badge http://db.tidbits.com/article/13303?rss#comments_17226 Thu, 03 Jan 2013 15:17:29 EST http://tidbits.com/article/13303#comments_17226
http://snnyc.com/2012/12/iphone-data-leak/]]> http://db.tidbits.com/article/13303?rss#comments_16622 Tue, 27 Nov 2012 19:24:08 EST http://tidbits.com/article/13303#comments_16622 http://db.tidbits.com/article/13303?rss#comments_16439 Mon, 05 Nov 2012 10:10:30 EST http://tidbits.com/article/13303#comments_16439 http://db.tidbits.com/article/13303?rss#comments_16401 Wed, 31 Oct 2012 04:44:53 EST http://tidbits.com/article/13303#comments_16401 http://db.tidbits.com/article/13303?rss#comments_16359 Mon, 29 Oct 2012 10:10:07 EST http://tidbits.com/article/13303#comments_16359 http://db.tidbits.com/article/13303?rss#comments_16356 Sun, 28 Oct 2012 20:26:05 EST http://tidbits.com/article/13303#comments_16356
So that said, the app with the fishy name is something legit. The thing is that this app has been granted VoIP privileges in order to run in the background (or actually to be automatically awaken by the OS at regular intervals) because even though its main feature is keeping track of the data usage, it also implements a full blown VoIP client for the sole purpose of being eligible to this kind of privilege. It actually needs to run in the background in order to update the current data usage stats. IMO that's a dirty trick which I'm surprised Apple's review team has allowed (or maybe it just slipped through them), and it will certainly have some impact on the battery usage of the device, given that the OS has allow the app to run every 10 minutes aprox, even if just to use a few CPU cycles, but that means that the system is being awaken constantly rather than being allowed to enter into a power saving state.]]> http://db.tidbits.com/article/13303?rss#comments_16353 Sun, 28 Oct 2012 17:39:35 EST http://tidbits.com/article/13303#comments_16353 http://db.tidbits.com/article/13303?rss#comments_16322 Fri, 26 Oct 2012 16:36:44 EST http://tidbits.com/article/13303#comments_16322 http://db.tidbits.com/article/13303?rss#comments_16320 Fri, 26 Oct 2012 15:54:00 EST http://tidbits.com/article/13303#comments_16320 http://db.tidbits.com/article/13303?rss#comments_16244 Mon, 22 Oct 2012 19:57:56 EST http://tidbits.com/article/13303#comments_16244
My solution has been to restore my iPhone to a clean state. So far, the problem has not returned. I'm building up my repertoire of apps slowly, so perhaps if the problem does return, I'll be able to work out what app caused it.]]> http://db.tidbits.com/article/13303?rss#comments_16222 Thu, 18 Oct 2012 12:51:14 EST http://tidbits.com/article/13303#comments_16222 http://db.tidbits.com/article/13303?rss#comments_16206 Tue, 16 Oct 2012 17:01:51 EST http://tidbits.com/article/13303#comments_16206 http://db.tidbits.com/article/13303?rss#comments_16172 Mon, 15 Oct 2012 12:26:11 EST http://tidbits.com/article/13303#comments_16172
nevermind, didnt wait long enough]]> http://db.tidbits.com/article/13303?rss#comments_16161 Sat, 13 Oct 2012 16:37:04 EST http://tidbits.com/article/13303#comments_16161 http://db.tidbits.com/article/13303?rss#comments_16155 Fri, 12 Oct 2012 20:22:25 EST http://tidbits.com/article/13303#comments_16155
Thanks Adam. I wouldn't have known about DFU mode without your article. Re-loading iOS didn't work without DFU mode and starting as a new phone.]]> http://db.tidbits.com/article/13303?rss#comments_16128 Wed, 10 Oct 2012 08:45:46 EST http://tidbits.com/article/13303#comments_16128 http://db.tidbits.com/article/13303?rss#comments_16118 Tue, 09 Oct 2012 21:38:03 EST http://tidbits.com/article/13303#comments_16118 http://db.tidbits.com/article/13303?rss#comments_16100 Tue, 09 Oct 2012 15:08:00 EST http://tidbits.com/article/13303#comments_16100 http://db.tidbits.com/article/13303?rss#comments_16094 Tue, 09 Oct 2012 13:39:57 EST http://tidbits.com/article/13303#comments_16094
I can say now in my case it is not software or iCloud issue. I think I just got bad luck with this piece of phone. Also when I bought the power button was rattling when you shake your phone...it sounds like a chinese plastic toy :) But now also th battery started rattling also... it seems ii loose inside the phone. Anyway, I have ordered new one (with larger 64 GB capacity) from Apple store and when the new iphone arrives in next 2-3 week (I hope it will be 100% OK) I wii take this old one to RMA/replacement to T-mobile. Thank you anyway for your advice.]]> http://db.tidbits.com/article/13303?rss#comments_16083 Tue, 09 Oct 2012 10:14:19 EST http://tidbits.com/article/13303#comments_16083 http://db.tidbits.com/article/13303?rss#comments_16081 Tue, 09 Oct 2012 10:01:10 EST http://tidbits.com/article/13303#comments_16081
I am pretty sure this is not my issue as when I looked at my CPU usage (usin Sysstat Lite from App Store), there is almost no CPU used (1-2% only) according the guy from the thread while he is just at airplane mode only. So no high load caused by webbookmarks. No, I am not using iTunes Match at all. OK, I can try restore iphone again with no initial logging into the iCloud. Yes you mich be right, it can be also caused by weak 3G coverage (1-2 bars of signal in my home and 2 bars in work so this is also can affect battery life rapidly). When the problem is iCloud it will be real problem as I have almost 5 Apple devices synced. I hope Apple will release the fix soon.
]]> http://db.tidbits.com/article/13303?rss#comments_16080 Tue, 09 Oct 2012 08:48:59 EST http://tidbits.com/article/13303#comments_16080 http://db.tidbits.com/article/13303?rss#comments_16075 Tue, 09 Oct 2012 01:49:32 EST http://tidbits.com/article/13303#comments_16075
Battery 87%
Usage: 1h 43 min
Stand by: 10h 14 min

Usage - approx. 1 hour just listening the music, the rest is web browsing Wi-Fi + 3G (no LTE in our country). It lasted 6 hours to go from 100% to 98% (when I was sleeping), now it seems to go down (to 87% much quickly - 3% down while 3G browsing in 5 minutes). I have iCloud syncyng (turned off just Safari and Notes syncing), location services on. iPhone is clear with no apps instalated (only stock apps). I think still the result is not acceptable - what do you think? Whats your usage statistics Adam? Thanks.]]> http://db.tidbits.com/article/13303?rss#comments_16063 Mon, 08 Oct 2012 15:04:33 EST http://tidbits.com/article/13303#comments_16063 http://db.tidbits.com/article/13303?rss#comments_16062 Mon, 08 Oct 2012 14:34:54 EST http://tidbits.com/article/13303#comments_16062 http://db.tidbits.com/article/13303?rss#comments_16056 Mon, 08 Oct 2012 11:09:17 EST http://tidbits.com/article/13303#comments_16056 http://db.tidbits.com/article/13303?rss#comments_16055 Mon, 08 Oct 2012 11:07:43 EST http://tidbits.com/article/13303#comments_16055
I can't say that I tried just turning off cellular data, since that's not an acceptable workaround, but I definitely had the problem when my iPhone was on Wi-Fi.]]> http://db.tidbits.com/article/13303?rss#comments_16054 Mon, 08 Oct 2012 11:05:39 EST http://tidbits.com/article/13303#comments_16054 http://db.tidbits.com/article/13303?rss#comments_16052 Mon, 08 Oct 2012 04:23:18 EST http://tidbits.com/article/13303#comments_16052 http://db.tidbits.com/article/13303?rss#comments_16034 Sun, 07 Oct 2012 08:41:55 EST http://tidbits.com/article/13303#comments_16034