Q: iPhone 4S 5.0.1 Update Improves Battery w/ Settings Reset

I have been reading this thread with great interest as I plan to get an iPhone 4S (my first iPhone) this weekend.  I just read an article about this problem on a Mac magazine's website.  (I'd post a link to the article but I'm not sure if it's OK to do that here).   The author had the same problem.  He downloaded an app called "System Activity Monitor", which works like the OS X's Activity Monitor, showing what processes are using the processor and memory.  Using that app, he discovered that the process "dataaccessd" was continually trying to do something and crashing and then producing a crash report over and over.  This cycle was causing very high processor usage, which led to the battery draining very quickly. Switching off contact syncing in iCloud returned processor activity to normal.  He then used the same procedure recommended in this thread by davidch and it solved the problem for him.

I just post this info here because I felt that installing the System Activity Monitor app might help those folks whose battery problems have not been resolved by using the procedure recommended here determine if there is a single process that keeps crashing and causing very high processor usage, which drains the battery very quickly. 

Hey fine folks, hope all of your phones are making some progress at the very least, as we await some remedy to all of this down the line, in hopes of it getting resolved. I hadn't turned to any discussion boards, seeking things out as this is my very first iPhone, so I don't have a great sense of understanding about the operability of iphones, much less the functional aspects of its battery life.

I figured I'd throw my two cents in to the ever-expanding sea of the comparing of notes. All I've done, ever since I got my 4S is a complete battery recalibration (starting from a 100% charge only to run it all the way down to a brick and then recharging it up to 100%) as well as a resetting of settings because there was a glitch in iOS 5 with push notifications not working with iCloud, which didin't make thinks any better until the update rolled around. Other than that, I've got all kinds of stuff turned on on my phone, and looking at my stats ever since my last charge this is was it has logged down as of now, at 72%:

Usage: 2h 10 min

Standby: 18h 40 min

Now, should it stand at way more than 72%? As noted earlier, I have no experience of owning a portable iDevice, so I wouldn't know as to whther or not this performance seems ideal or not. For the sake of validation, I'd appreciate it if anyone, who thinks they have a healthy device, would give their input toward these stats.

Appreciate your comments.

fiman

That's amazing compared to mine!

Mu USage is 2 hours, 15 minuets, and my Standby 10 hours, 47 minuets. I have 56% left

Help, check my iPhone 4S battery! Is it normal?

73%

Usage 1hr 33Mins

Standby 7hr Mins

Ok guys... The next update 5.0.2 is supposedly coming out "no later than next week" and is supposed to fix the battery problems. When it comes out, should I get the update and see what happens, and do a full restore if I have to? Or should I restore before the update? I don't mind restoring if I have to, I'm just worried about my Camera Roll. I have about 1200 pictures. I obviously don't want to restore, but if it's the only thing possible, I'll have to do it.

When I got my iPhone 4S, I restored it from my iPhone 3G backup.

turn on the photo cloud thing to import to your mac/windows after that you should be able to restore from your iPhone or if you want your computer and unless you jailbroke you dont need to restore

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Is anybody else finding a big difference between standby mode with Wifi and with 3g?

On Wifi my battery drains about 1-2% per hour (in standby mode).

On 3G about 6-7%...

Anybody?

Thanks for the tip, i followed and here to report my numbers, seems okay now:

After ~

6 Hrs 30 min usage

3 Days 5 hrs Standby

(Similar settings as yours)

My battery now is: 1%

I'm happier now

Hello. Is the Iphone 4S my first Iphone. My old phone is a Blackberry Torch 2.

I updated my iPhone to 5.0.1 IOS, but my battery is charged at 07:00 am in 100%, and at noon and is 52%. Now, 08:37 pm and is off the phone. A curiosity is that off with 10 to 12% load automatically.
I have a also a iPAD 2, and when I had the IOS 4.3, I loaded my iPhone every 2 or 3 days on standby.
Now with the update 5 and later with the 5.0.1, I have to load your battery every night. Today at 07:00 am was 100%. Now with the 3G turned off and only with WIFI on, I have 68% battery.
A hug and I hope the Apple contact me before I end my term technical support. The preferred language is Spanish or Portuguese contact.