iOS 6.1.3 battery drainage

Thanks, I preformed the steps. It's re-syncing and charging. I will report tomorrow my findings.

same here , iPhone 4 and ios 6.1.3. and suspect is the mail application. after the upgrade my mail is always as "checking". after manual shutdown the app it seems battery. I already set NOT to use push email

dito.

4s and 6.1.3 did it. never had an issue before and now BANG.. 20% left after a couple of hours.

enough for me to come here and post about it!

6.1.3 has made my phone EVEN worse! This is just ridiculous! 2 months of this battery drain issue is just unacceptable apple! Fix it now before you lose loyal customers to android. Please.

+1 Same problem after upgrading iPhone5 from 6.1.2 to 6.1.3. Even when I'm not using my phone, the battery percentage is dropping quickly. Very bad situation with this product. Apple - need to do something!!!

Just to add to my earlier comment, it does seem to be exchange causing this issue, i followed Laurence Fitch message and now seems to be ok, everything was off anyway but after deleting the exchange accounts and rebooting i have now lasted 1 hour with 1% drop...seems to fix it for me and a few others at least, it also seems to have fixed my slow 3g speed also...

Thanks to Laurence

all this is happening because of the "curve" of software from Apple. when, after the firmware is not the normal reset to factory settings.

So if you remove all the email accounts off the phone, reset the phone by home and on, then re add your emails this seems to fix it?

To solve battery drain issues:

It took me a week to figure this out.

AnD I've just figured it out right now.

You're gonna have to start your iphone as new, disable data AnD 3G. Do not backup, do not get icloud.

Download all of your data (apps) from wi fi alone (do NOT enable data AnD roaming!!).

Then when you're done getting all of your apps back, enable data.

Leave it on stand by for a few minutes.

Enable 3G.

Don't you ever download an app with data and 3G enabled, it will mess up data transfer somehow.

This is Apple.

And this does not work, repeat and do not enable 3G at all,

You're gonna get a normal battery

thanks for the instructions

but why should I phone without mobile internet?
How do I use the VoIP without mobile internet?

If you're talking to me,

You can enable everything back once you're done downloading the apps.

The key is only download apps with wi fi AND make sure data And 3G are off while you're doing it.

My battery used to drain 20% an hour, works perfecly now

Lawrence Finch you are a life saver. Followed your simple instructions. 6% chewed up in 4 hours. Back to normal. Follow Larry's instructions on the first page. No wiping / no restore / no deleting exhange account.

Brilliant +1.

So far it seems mines working too, just went into settings, mail, then turned each of my mail boxes off and all of the contacts, calendars etc off one by one, didn't delete anything kept them all on iPhone, did a reset and then turned then all back on and touch wood it's seems ok

I am on AT&T network