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Mine was performing better yesterday after a full drain, anything more than 1.5 hours of usage before it dying would have been better. I did another full drain and a network reset and it's performing much worse today even though I put all my settings back and have still not even tried to use Siri or iCloud and have no calendars and all location services off, etc. I'm losing a percentage every other minute which is shockingly twice as good as it was when I got it. If this isn't resolved by Monday morning with a software update, I'll be taking my phone in for a refund. Having push on for things like email and facebook messages should not be causing this kind of drain; my crappy old blackberry can do that and still hold a charge for 2 days.
 
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The DFU - reinstall is a sure-fire way to fix the issue, painful though it may be.

I'm glad that worked for you but it's simply not 100% true. There are other forces at play here. My phone (and my wife's phone) were set up as new from day one. Didn't restore from any backups. Since then we've both been through two DFU reinstalls, and our battery performance remains no where near what our iPhone 4's were getting. (Mine just died; it clocked over 9 days of standby.) We're luck if we get through the day with "very light" usage.

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Any way to do a DFU restore at home?

Short answer is yes. Longer answers are here. Basically, with your phone on and plugged into your computer (and with iTunes up), power the phone down. After it's powered off, press and hold both the sleep and home buttons. You'll see the Apple logo appear. When it disappears, count about 3 or 4 seconds and then let go of the sleep button -- but keep holding the home button until iTunes throws a message at you saying it found your device in recovery mode. Note that the screen will be black on the iPhone (it'll look like it's off). At this point you can hit the Restore button if you haven't already downloaded the IP4S' firmware, or if you have it, you can hold Option (assuming you're on a Mac) and click Restore and then navigate to the IPSW file to install on the phone.
 
Fixed My Battery Drain

Hi. I'm new to the forums. But, I hope this helps someone. I had the same problems. My battery was draining 1% a minute just from checking my reminders or a quick check on the Internet. I tried the suggestions of turning off notifications and location services that I didn't need. I also tried changing my email from Push to fetch and re-calibrating my battery. My battery was still draining just as fast.

Then I turned off Ping.
I charged my phone overnight. This morning my phone sat in standby for 6 hours. The battery only drained 3%. I can tell you that with Ping turned on, the battery would have drained close to 30% in that same amount of time. I only made light use of my phone today. I checked reminders, email, and spent approximately 30 minutes on the Internet. I also recorded a 12 minute video. I still have 78% left on the battery after 14 hours.
 
Rather than restore, I decided on the true nuclear option: rebuild. So, I *reinstalled* all my applications and content fresh (sucked it up and lost my app data). Now the battery performs perfectly, just as I would have expected, and just as my iPhone 4 did. After 6 hours of light use I still have 92% left! All the network settings and push settings, and Siri, and Location Services, etc. are still on. I think the restore of an iOS4.3.5 backup on to an iOS5 image screws up something so fully that you need to reinstall your apps fresh. Could probably hunt and peck and find the offending configuration or application state if you spent weeks at it. But it isn't worth it. The DFU - reinstall is a sure-fire way to fix the issue, painful though it may be.

Many of us have done DFU restores and many of us have set up our phone as new and not from a backup. Give it time - your battery issues will be back. The problem is iOS 5.

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Then I turned off Ping.
I charged my phone overnight. This morning my phone sat in standby for 6 hours. The battery only drained 3%. I can tell you that with Ping turned on, the battery would have drained close to 30% in that same amount of time. I only made light use of my phone today. I checked reminders, email, and spent approximately 30 minutes on the Internet. I also recorded a 12 minute video. I still have 78% left on the battery after 14 hours.

Many have turned off Ping without success. Give it a couple of days and let us know if that permanently fixed it - I'm fairly certain it won't.
 
Average use

52 percent left - 13 hrs standby, 2.5 hrs usage.

Not exactly ideal, but I have things trimmed down and still not better, did install as new phone too....I am waiting for a fix...its iOS 5, something is bleeding the life out of these batteries and its software for sure.
 
Don't think that's "good" enough.

photo-1.png

This is my first drain below 10% since I bought the phone on Thursday.

My battery log:

2:30 AM - 100% charged

3:30 PM - 85% charged (stand by after sleeping in with ~30 minutes of alarm)
4:30 PM - 66% charged (after one hour of heavy texting)


9:30 PM - Usage: 4:10 hours; Standby: 18:52 hours
0% charged (DRAINED) Calibrated
Main Apps used: Siri, Messages, Facebook, Phone, Music, Safari
 
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Its when you put the phone into dfu mode and then restore ios5 onto it

Just google iPhone dfu mode


I'm having much better battery with Facebook notifications off and after a dfu restore, it's been on 100% since I took it off charge

Usage 10mins
Standby time 1h 19 mins

And this is with all iCloud features and all system services in location settings turned on
 
Many have turned off Ping without success. Give it a couple of days and let us know if that permanently fixed it - I'm fairly certain it won't.


I'll check back in a few days and let you know.
 
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How does mine compare??!

I charged it at 7pm to 100%.
10pm its gone down to 62%.

Standby 4 hours 30 mins
Usage 1 hour 43 mins

VERY poor compared to my 4!
Should I take it to the Apple store and get it looked at/replaced?!
 
Hats the point of DFU restore vs regular?! I did regular restore which didn't fix anything really. I don't see stock firmware flash in DFU spin something else. Can someone elaborate on that one.
 
Seems like my phone is draining crazy. imessaing and browsing with tapatalk only, no video no pushing email. All location off except cellular search, Siri off as well. ImageUploadedByTapatalk1319353879.059223.jpg
 
Seems like my phone is draining crazy. imessaing and browsing with tapatalk only, no video no pushing email. All location off except cellular search, Siri off as well. View attachment 308781

Same stuff with me hollowplayer:

- 4 hours of 3G internet usage
- 6 hours of WiFi internet usage

Only 2/3rd the time that Apple advertised for the 4s...
 
I gave mine another full charge from dead last night, all apps killed and rebooted.

Unplugged it at 11.55pm at 100%, got up this morning and at 8.25am it was at 90%! I checked the usage and it recorded 8 hours 30 mins of standby and 24 minutes of usage, weird huh?

What I want to know is why the phone was using itself for 24 minutes in the night?

An hour later it's on 82% and all I've done is check an email, a 1 minute call and go on the app store very briefly. There's another bunch of awdd messages in the log too.

Debating if I should DFU mine or not, but since it was set up as new I'm inclined to wait.

Trying to decide what to do ... to return or no to return, the 14 day cooling off period is almost up! There's no apple store near me so a genius appointment is not an option. :-(

For those who don't want to set up as new because you'll loose app data (lets say angry birds/cut the rope) you can extract the data from a backup using "iPhone Backup Extractor" and place them on the phone using "DiskAid" (Google them) both have free trials that would do the job for you and does not require jailbreak.
 
Just dropped to 33% now. Used for I messaging, texting and 5 mins of words with friends. Also used the camera for about 5 mins (with flash) and used itorch for about 10 minutes. Wifi and data on the whole time. Browsed this forum using tapatalk and also sent a few tweets last night.
 

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So coming from a full charge yesterday morning my usage so far:

51% battery life left.

"Time since last full charge

Usage: 2 Hours, 45 Minutes
Standby: 22 Hours, 8 Minutes"

I've not really been using it much though, some casual browsing and iMessage (mostly using my home WiFi).

Think my iPhone 4 would have a higher percentage at this point, but the difference isn't as dramatic as I initially feared. Guess draining my battery properly has made some improvements.
 
Has anyone else noticed that the screen brightness never adjusts with auto brightness enabled? Even if I cover the entire top portion of my phone the brightness never changes. I keep it set at around 25% but it seems to remain constant even with auto brightness on. I'm not sure exactly how much battery this setting actually saves, but if it never dims in darker surroundings I'm sure it affects the battery some.
 
Hey guys,

My new I4S has been fully drained and recharged to 100% twice, now and its been on for 30 minutes already at 80%


something wrong here ??????
 
I think the answer to most of the hundreds if not thousands of battery usage/drain questions is simple.

The iPhone 4 and 4S are thin phones and have relatively small batteries, and yet the phones as delivered have lots of processes that use up battery time and lots of apps that use up even more battery time.

I previously had an HTC Incredible with a big, honkin' optional battery and optional back on the phone to cover the battery. The Incredible didn't have that much going on sub rosa, as the iPhones do, and there were widgets to turn on and off Wi Fi and Network right on the home page, so the optional battery lasted a long, long, long time. I wouldn't even bother to check it more than every three or four days, and even then it still had a high percentage of juice left.

Everyone seems to admire the iPhone's slim, trim package. Well, a small battery is the downside. This is easy enough for Apple to resolve - just manufacture an iPhone with a removable back and make optional, larger batteries available.

If you want to use the many features on your iPhone, you need more juice than the standard battery will provide.
 
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