Q: iPhone 4s Battery Life?

I am having the same weird issues.  Ive restored and setup as new, turned off time zone and weather calibrations, setup restrictions for itunes and ping.  I use my phone as an alarm to wake up. My iphone 4 would go from 100% to about 94-95% overnight. No biggie.  My iphone 4s goes from 100% to between 40-50 percent in less than 8 hours doing nothing with the phone.  The only way to prevent this is to put the phone in airplane more.  Then it usually drops 1% at most.  Ive also turned off diagnostics, disabled wifi sync.  I refuse to shut all these features off on my new phone when my iphone 4 had them all enabled.  I feel like I upgraded to a droid and seem to be bringing a charger wherever I go.  Any more tricks around other than shutting off all phone features so my phone will last through a nights sleep?

Looks like Apple is taking steps.

They're telling people to install some software on their phones to try and fix the issue

http://goo.gl/pMKXP

I want to quickly add my experience.

I had terrible battery life myself on my white, 16GB 4S. After reading some of the advice found in this thread and several other articles floating around the net, I managed to fix the problem.

What seems to work is (important steps in bold):

-Backup your 4S to iCloud (some say this step is not necessary, that it's the next one that counts)

-Boot in recovery mode and do a restore!

-Reinstalled everything manually (apparently, at that point you could also recover from the previously made 4S backup, if you have one)

At this point, my battery was still draining like mad (35% overnight)

It was the next step that then completed the process:

-Drain the battery!! (I drained it to 5%, apparently anything lower than 20% might do it)

-Full recharge (leave it charging for a while when it hits 100%)

The battery has been showing 100% for almost three hours now.

This is what fixed my battery issue:

Settings->Location Services (On)->System Services -> Setting Time Zone to OFF.

Everything else is on including Fetch email and WIFI sysncing with iTunes.  Now the battery does not discharge when I am not using the phone.  Before I would have 1% down after every 15 minutes.

This is what fixed my battery issue:

Settings->Location Services (On)->System Services -> Setting Time Zone to OFF.

Everything else is on including Fetch email and WIFI sysncing with iTunes.  Now the battery does not discharge when I am not using the phone.  Before I would have 1% down after every 15 minutes.

Lost 30% in sleep mode with no push, location services on in 3 hours. During the same 3 hours I was using my 27 month old 3GS listening to music and only lost 10%. Something is terribly wrong here.

Another weird experience: My iPad2 - also with 5.0 - has WiFi only. I looses about 1-2% charge a DAY!

So it is definitely a power management issue with the GSM/CDMA radio and the constant communicating - even with all features disabled... Looks 1st like a serious privacy issue and 2nd like a serious battery issue, resulting from violating user's privacy rights. I see big class action suits on the horizon. Better sell my apple shares NOW.

I think it's safe to say that something that was removed from the phone (be it a service, setting or data) was causing he battery-drain issue. A 5% battery drain was routinely observed during sleep periods of 30-45 minutes.

The one interesting thing is the generation of 19 new awdd_ messages during the sleep.

After a 6.5 hour sleep period:

Oct 29, 2011 6:18 AM

88% (dropped to 87% in first minute of checking stats)

Usage 41 Minutes

Standby 8 Hours, 50 minutes

Sent 35.0 KB

Received 142 KB

35 awdd_ messages

________

For comparison:

Oct 28, 2011 11:55 PM

92%

Usage 31 Minutes

Standby 2 Hours, 24 minutes

Cellular Network Data

Sent 29.0 KB

Received 137 KB

About 15 awdd_ messages

Same issue here.

My Phone has been off the charger maybe 1 hour and now i am down to 88% Have not made any call or anything to drain the battery.

Mine was draining battery like 10% an hour when I first got it, after trying every single the tricks on this forum, now it is managing to last for about a day and 4 hours on standby. Is it good enough for me? Absolutely not. I have asked my friends around who got iphone 4s, and they have reported similar problems. Apple CEO, unfortunately not Steve Jobs this time, better stand up and acknowledge the issue and fix it soon. Otherwise, I see people leaving apple in doves. An era is ending after Steve, world will be calling for new leadership at Apple.

Just wanted to share my experience.  I know I've had some poor battery life, but last night confirmed it.  Went to bed at 100%, my son woke me up in the early morning at 4am.  The phone didn't move one bit or was touched.  It was warm to the touch and about 6 hours of being fully charged was down to 60%.

Your mileage may vary, but I applied that technique earlier his week and it accomplished no appreciable results.

"Hopefully these experimentation is helpful to Apple in tracking this issue down. The process feels reminiscent of the OS9 days trying to ferret out a misbehaving extension... "

The good old days!

Yes. It made no measurable improvement for me.

The biggest gain I have seen is doing a factory restore and keeping all services except WiFi disabled.

Other Han that, preventing Reminders access to location services was the next best (but still bad enough that I wiped the phone out).

I didn't read through all these posts, so if I'm saying something that was already stated I apologize for duplicating...

My 4S was losing 1% of battery every 3 or 4 minutes and it was REALLY warm.  I downloaded System Activity Monitor (.99¢ in the App Store) and noticed that the CPU was pegging out or consistantly at 50%+ and the culprit was usually contacts or calendar processes.  Turning off location services, brightness, Bluetooth, etc had no effect so I assumed that it was a software issue. (duh)

My company upgraded their Exchange server to 2010 this week, so I had deleted the IMAP account and created a native Exchange account, syncing mail, contacts and calendars.  I stopped syncing everything except mail.

Next I went to my iCloud settings and turned off ALL features and deleted from my iPhone whenever I could and then rebooted the phone.  After the restart I turned services on one-by-one and watched System Activity Monitor for each process and after starting each process the CPU would hit 40-50% while the service started and then go back to idle (2-4%).  After repeating this process for each service in iCloud it was the same for each.

But now everything was hunky dory...CPU was at a normal idle level and the battery was holding.  After a half hour of stable operation I decided to turn on contact syncing from Exchange and the instant I did that the CPU started a constant fluxuation between 15% and 60%.  When I tried to turn it off it wouldn't solve the issue.  The "ABDatabaseDoctor" process was still hammering the CPU.

After deleting the Exchange account, rebooting, and syncing only mail the issue seems to be fixed.  I don't know if it's specific to Exchange, but syncing my Google Calendar has the same effect.  It seems that syncing data with sources outside of iCloud is causing the issue for me.  Without Exchange and Google syncing I'm humming along at 2% CPU utilization while the phone is idle.

Anyone else noticing this?