iPhone 4S 5.0.1 Update Improves Battery w/ Settings Reset

After installing the update make sure you reset all setttings. I have done a few updates now and have had much better sucess after settings reset all. Standby drain has been virtually eliminated from 2-4% hr before update. It is located in settings/reset//reset all settings. You loose some wifi and desktop settings, but data, apps, etc remain intact.

Posted on Nov 11, 2011 5:33 PM

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1,080 replies

Nov 18, 2011 8:15 AM in response to davidch

After suffering for a week with my iPhone 4S (previously had an iPhone 4) I followed these steps and this was my first day of usage (after following davidch's recommendations.)


Remaining Battery: 1%

Usage: 6 hours, 5 minutes

Standby: 1 Day, 5 hours


Good? Bad? Average?


I did my recharge (after draining the battery) in the afternoon so I left it unplugged overnight. The battery only dropped like 5% during the 7-8 hours I was sleeping. However, the battery seems to drain much faster while it's sitting (idle) at my desk. Is that b/c I likely get less things pushed to my phone (mail, notifications, etc) during the day versus middle of the night?

Nov 18, 2011 9:21 AM in response to byronb

here is a suggestion for iphone designers for the next generation

make the phone .25 of an inch thicker and put a real battery in it that YOU think should last a month, then maybe normal people can go a day or 2 without charging, don't get me wrong I love my iphone, features etc. but batteries have always been a low point on all models, everyone i know with an iphone of any design seems to carry their cable with them if going anywhere for more than a couple of hours. I keep one in my car, one at home and one at work. but still hard to keep it going all day if used a lot. portable means not needing a cable!

Nov 18, 2011 11:29 AM in response to trev8486

trev8486 wrote:


Just for reassurance, if I do set up my phone again as a new phone, I will not lose any apps that I have downloaded? Granted I only have a few apps seen as I purchased my 4S a few weeks ago, but all the apps I currently have on my phone should remain intact, yes?

all your data should be preserved (apps, contacts, mail, photos, etc), but it is always a good idea to backup all your data first and reguarly (for that matter). you can backup to iTunes and/or iCloud (if you need sometime in future). however, when you perform the process do NOT restore from backup. setup up as new phone. sounds kinda of confusing, but all your information will still be there. ONLY the basic system level info will be reset (i.e. wallpaper, wifi, etc)

Nov 18, 2011 11:30 AM in response to davidch

For anyone new to the thread be sure to go through these steps to address the battery after updating to iOS 5.0.1:


1. Reset all settings (settings app-> general-> reset)


2. Go through initial setup steps (lang, wifi, siri, enable location, etc) and choose setup as new phone (don't worry your apps, data, contacts, mail will still be there). Do NOT restore from iCloud or iTunes (It can copy back corrupt settings)


3. Turn off system location services timezone and iAd


4. Fully discharge battery (until you get the spinning wheel and it shuts off)


5. Fully recharge battery (overnight if possible)


In my experience this improves the Standby battery drain issue significantly in most cases. It reduces drain from 2-4% or more per hr to 0.5% or less. It has worked for many, many users now. If it does not work after a few try's you may have a real battery or hardware issue and should contact Apple. Good Luck!

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iPhone 4S 5.0.1 Update Improves Battery w/ Settings Reset

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