I'm losing 5-6% overnight (8-10 hours) with no syncing -.-"
And i've done everything to get "some" battery life improvement but still draining quickly, (restoring as new, setting as "New phone" without restoring, Reset all settings and drain it to 1% and charge it up to 100%)
I'll observe for at least one more week than will see if i get a replacement
please continue to keep us posted. i know it is hard to be thorough/extensive, but what apps do you have running in the background and what kind of notifications/location services do you have running?
i was going to wait until my test was complete (may take a week or two), but i might as well report where i currently stand as i
might have found my culprit for overnight drain.
after work last night, i charged my phone fully up and further disabled (see my other settings in a prior post):
- Photostream (which i had done previous evening)
- Dropbox (logged out)
- Evernote (logged out)
when i woke in the morning, i checked the phone, it showed: 99%, 15 minutes usage, 10 hours stand by.
This is very good, in my experience although i have to add the caveat that my phone always stays at 100% for a while. Neverthless, if i i did something similar in prior weeks with my typical things enabled (the three items above as well as facetime and siri), i would see the phone at 93%.
so, i'm pretty certain there is some distinct improvement here.
the prior night, i disabled photostream and saw it drop from 78% to 70% which is the typical drop i've been seeing. (as low as 6%, as high as 12%)
admittedly, i need more evidence as i have seen my consumption vary from as little as 6% (that is usually coming off a 100% charge before going to bed) and as much as 12%. i think this variability speaks to the inaccuracies/inconsistencies in the battery meter percentrages as well as variability in different services.
also, i haven't systematically timed/recorded what duration that overnight consumption occurs over (could be as many as 12 hours and as few as 7-8), but it seems, at first glance, that one of the three above (or all of them) play a major role in what i've seen consumed overnight.
what still puzzles me is the 15 minute usage overnight. i'm not sure what is being "used" as i shouldn't have anything being pushed/fetched. nor are any location services being used overnight (all of my "system services" are OFF)
the only thing i could think of is the remaining icloud things which are: Contacts and Find My iPhone.
(oh, i turned off Notes syncing too, the past two evenings in the numbers reported above.)
in the end, i use all of these things and may ultimately put everything back on and live with the ~10% overnight consumption. but it would be good to know what is sucking up all of my battery!
finally (sorry this is so long), one thing i read about (did a lot of good searching) regarding Dropbox is that if one uses it at home with a PC/Mac, they should disable "Enable on LAN." from what i understand, if that is checked, the PC/Mac may regularly query the net and try to update the phone (even if no files have changed). i will report back at some point, if i find that is indeed the case when i add Dropbox back into my mix of overnight running apps/services.
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i think he did and he still is seeing those numbers.
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Could it be that those who are getting really long usage times (like, 12 hours on a single charge) are simply listening to a lot of music? Listening to music in the background with your screen off also ups the usage timer, but it doesn't nearly use as much battery as when the screen is on.
So I'd say a good value without any "screen off music" is somewhere around 6 hours (from 100% to empty). Any intensive game playing or web surfing in areas with weak signal will lower the time accordingly.
Also, any stuck processes (some iCloud bookmark sync, or Skype which is notoriously a CPU hog in the background in some cases, etc) will significantly shorten life on a single charge.
My battery has been pretty much constant with the 4S and iOS 5 or 6, and now with the iPhone 5 with iOS 6 or 6.1. I always have a decrease of about 15% for every hour of usage, and that's fine to me.
quite possibly...of course, as i've noted, i don't expect 12 hours. i just want more than 5-6
i've done quite a bit of testing of what my consumption is for at least my types of iphone usage during my commute which is about 45 minutes long: i consume around 10% (8-11%) in that time, which works out to be about 7.5 hours of usage. i know this is about right, as i used to get about 7-8 hours of usage over 2 days with my iphone 4.
of course, signal strength plays a major role in consumption. at my office building, if i move into the interior rooms for meetings, signal is really poor and i see my battery consumption shoot way up. i've also made the habit of turning off LTE when at work since LTE signal is really poor compared to 4G and also results in higher battery consumption; not to mention, i often miss calls if i leave my phone on LTE since it pulls in 1-2 bars vs 2-3 bars on 4G.