iPhone 4s; Battery drops 17% in 9 hours overnight...normal?

i am actually seeing some decrease in battery as well :S

kinda weird

4s standby time is 200 hours, whereas 4 was 300 so you're gonna get worse standby time

only thing i can think of is if you have push enabled for mail

or, if you have a location based reminder set

Some background app was running, probably using 3G or wifi for data.

will0407 said:

Nope, closed everything except siri

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Siri probably operates all night and records your breathing (and/or snoring) patterns, to better understand and get to know you.

Why don't you try this?
Close all apps, leave it in flight mode and check. You will probably only use something like 1 - 4% of the battery overnight.
Then slowly put things back to normal. Check the next night without the flight mode, then with more apps.
You might also wanna try to remove the email addresses for the test.
Good luck.

I had the same thing with the iPhone 4, and I realize that it was cause I had Skype running on the background most of the times.
GL!

Are you sure it wasn't doing initial WiFi or iCloud backups? That can take a long time and use a lot of juice. Maybe tomorrow night put it in Airplane Mode and see what happens. Then you can narrow it down to communications or something else.

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Solution: plug your phone in when sleeping

My iphone4s is showing similar results; battery drops quite quickly.I thought it was maybe my phone, but other people here are having the same thing happen.

When I use it,it drops about 1% or some every 5 minutes.

Could it be bug in the OS! Or is it typically how the 4s runs?

One more thing. Is there any difference in charging using a speaker dock than using the power adaptor?

I am going to let it fully drain then charge it all the way up to see how it goes.

My 4S battery is draining very slowly when idle (on, but slept), so far not even 1% decrease in 3 hours. But, I don't have it activated on the cel network yet, it's just on WiFi. But anyway, drainage like that definitely can't be considered normal. Shut the phone off and reboot it, the try Airplane Mode to see if it makes a difference.

Insane. But listen to this! I went to sleep at half 1AM with the phone @ 70%. Wifi on, 3g on (its always on), bluetooth off, push email on.

Woke up at 730 and the phone was DEAD. I charged it up to 30% asap, then fell back asleep from 8-9. when I woke up it was still 30%.

Very confused!

will0407 said:

hmm, maybe it needs a few charges to sort itself out.

Anyway...come on wales!!!

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Yeah, that's what I figured . It's keeping it's % now for ages lol.

Mine charges very quick, even by USB.
Like in 10 mins it will charge 10%.Is that normal?

The battery needs to settle first

Like someone said before me, the standby time is 100 hours less, also iCloud and its related features use a bit I think, The main thing to consider is that the battery won't hold a normal charge until a few cycles have gone through it.

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My battery is dropping quick on my 4S too. But I think it takes a few cycles to work properly.

The battery definitely takes a few cycles to charge properly, so I'd give it a few days before comfortably deciding it's the battery life it was meant to have. Also, I first noted on my iPhone 4 with iOS 5 that Reminders, when turned on with iCloud, somehow used a great deal of background usage time in the General-Usage tab. Turning that off in the iCloud tab seemed to cut down the usage time and thus the battery drop. I've only had my 4S since last night so I can't tell you how quickly it's dropping yet, but I did notice excess usage time despite not using the phone, so I turned off the iCloud reminders sync. Too bad, I would love to have my iPad show the same reminders.

SOLLERBOY said:

Like someone said before me, the standby time is 100 hours less, also iCloud and its related features use a bit I think, The main thing to consider is that the battery won't hold a normal charge until a few cycles have gone through it.

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According to John Gruber, Apple rounds the standby estimates off to the nearest 100 hours (because Apple is just anal like that, they love nice round numbers...except when it comes to .99, $9.99, etc.). So the difference is probably not 100 hours. It could be like the iPhone 4 got 265 and the 4S got 235 or something like that.

will0407 said:

Glad I'm not the only one! I'm going to apple to get my iphone 4 replaced later cos the bumper i've been using has left marks on the silver band.

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How is that Apple's fault?

Also try to do a hard reset. That fixed a battery drain issue in my 4 once.

last night i slept at 2.30am, after a full charged 100%, today wake up at 11.30am. it only 53% left?!!!! that is unacceptable.
wifi on. 3g on. bluetooth off, push on. And no App on background running!!!

this is kind of ridicious . since my 3gs do way better than it.

Last night I went to sleep with my phone at 100%

This morning I woke up with it at 100% Why, because I plugged it in.


But, I notice the battery is draining fairly quick, but it's brand new and really hasn't had many cycles. Probably need to calibrate.

Just give it some time before having a melt down. ;P