iPhone 4S 5.0.1 Update Improves Battery w/ Settings Reset

Yes battery life improved so far but I haven't used it that long yet.

I noticed after the IOS 5.1 update that my phone would lose at least 20% of the battery life overnight doing nothing and connected to my home wifi. I reset the Network setting last night, charged the phone to 100% before going to bed and it was still at 99% battery this morning which is what it used to be.

I'm down to 80% today but have used 3g and wifi data and a couple apps this morning. Time will tell if this fixed it completely but it was quick and easy to do.

Sounds good...I'll probably try to reset network settings and see what happens. Has anybody tried resetting location warnings to see if that helped with battery?

Hi David/Anyone Else,

Can anyone confirm if my battery is ok.

iPhone 4s

ios 5.0.1

Followed your instructions and completed a full reset of all settings.

Battery @ 1%

Standby: 1 Day 3 Hours

Usage: 5 Hours 23 Mins

Used wifi for approx 30mins at Home.

All apps closed after used from Multitask.

iPhone used for Calls, iMessage, Text, Temple Run, Facebook, Safari, iPod (1 1/2 Hours)

All unused locations OFF.

All unused notification OFF.

iCloud: OFF

Sound: 60%

Brightness: 50%

Mail: FETCH MANUALLY

Facetime/iMessage: ON

Any comments/advice will be greatly appreciated.

Hi David. You may remember me from posting a while ago while this thread was new. I'm still actually having battery problems. I've had problems in iOS 5, 5.0.1, and now in 5.1. I'm not sure what to do. This week it really upset m e.

I decided to leave it off during school (and I usually leave it on). I turned it off after school ended (it was at 100%, and it took about 15 mins to get home while I used it. When I got home, I was astonished. It was at 92% :| In 15 minuents!

The second thing was, when I got home from school on Tuesday, The battery was about 46% with about two hours of usage.

I was fed up with this, and I tried everything I could think of, including your methods a while ago. I decided yesterday to completley restore the phone and set it up as new. I ddin't want things to come to that, but I decided, that hopefully it would be worth it, because everyone I've seen online who's restored their phone as new have seen improvements.I did that, and I think there's a minor improvement, but not as much as I would have liked.

Current Stats:

Battery: 50%

Usage: 2 hours, 42 minuets

Standby: 9 hours, 29 minuets

It seems to be better than before, but not as much as I expected. If I double the usage and standby times, it doesn't reach 6 hours of usage OR one day of standby, and I think it should be able to reach one of those times.

What do you think?

Hello David,

Thanks! I appreciate that you took two weeks to confirm your results. I will do the upgrade and follow your advice. Hope my results are good as well.

Regards,

Sanjay

Today's battery life was pretty bad:

2%

Usage: 4 hours, 13 minuets

Standby: 14 hours, 10 minuets.

Hi everyone,

I want to update everyone on my battery status... After downloading and installing the iOS 5.1 update, my battery life got worse. My battery life was better with 5.01 update after using David's tip. I tried using David's tip again after 5.1 was installed and no luck. My coworker told me that he did a full restore on his phone and it improved his battery life greatly. I tried out what he did and added it in with David's tip and sure enough the battery life improved! A few days ago I got about 7 hours of usage and 19 hours of standby. On the current charge, I am getting even better results! I am currently at:

Usage: 4 hours, 14 minutes

Standby: 1 Day, 7 hours

Battery: 29%

After last full recharge, I was at 100% for about 6 hours of standby and 17 minutes of usage. I was shocked! Here is what I recommend doing:

1. Backup your iPhone to iCloud (make sure you select everything you want to backup)

2. Settings>General>Reset>Erase All Content and Settings (This will fully wipe out your iPhone back to factory settings)

3. Set up your iPhone like you just bought it. Go through your settings and choose "Restore from iCloud backup"

4. Wait until your phone is done backing up from iCloud. (This may take quite a bit of time especially if you have a lot of photos and videos on your phone.)

This is where some of David's tips comes into play...

5. Once your phone is fully restored from iCloud, play games, watch videos, or use as normal until you fully drain your battery. Do this UNTIL your phone fully shuts off by itself.

6. Plug in your iPhone to fully charge until 100% and unplug.

7. Use the phone as you normally would and let it drain again until phone fully shuts off by itself.

8. Plug in your iPhone to fully charge until 100% and unplug.

9. Enjoy your improved battery life!

Note: You will have to re-enter your WIFI info. You might have to sync your iPhone to iTunes for some of your apps after the iCloud backup is done reinstalling on your iPhone. I would fully drain your battery and recharge to 100% at least 2 times after the restore. After that, it is recommended to do the drain and recharge once a month.

Good luck everyone! 🙂

I just do the upgrade !!!!! I did'nt rest my iphone 🙂

I reset the settings in my iPhone 4S and it's working perfectly now! 😎

Previously the battery would only last a few hours, but now it can last days at a time!

I used "Reset All Settings" and "Reset Network Settings". I did not "Erase All Content and Settings". I did not need to run the battery down to zero and then trickle charge it. Simply resetting the settings did the trick.

Cheers!

Sean

Davidch

Thanks for your tips. Ive tried and noticed better battery drainage when I'm on wifi. However, when connected to 3G the battery still drain pretty quickly. Is that normal in your experience? Or should the drainage be the same? I've even turned off wifi to see if that was effecting the situation perhaps because the phone was hunting for wifi but it does not seem to be the difference. Any comments or suggestions would be appreciated.

Hello David.

I purchased my 4S back in November 2011 and was receiving great battery life such as the following:

at 11% battery

usage: 6 hours, 15 minutes

standby: 2 days, 14 hours

I updated to the 5.1 version after reading your post to 'sanjayfromtoronto'. Since the update, I have noticed significant difference in my battery life. I am not using my iPhone any differently since I purchased it-except for adding a couple of new apps which I rarely use.

Currently I am receiving stats like the following:

Now, when my phone is at 11% battery,

usage: 4 hours, 19 minutes

standby: 1 days, 13 hours

13% battery

usage: 3 hours, 37 min

standby: 1 day 18 hours

4% battery

usage: 4 hours, 1 min

standby: 2 days, 5 hours

I have employed your reset procedure SEVERAL times, but that does not seem to make a difference in battery performance?

Any suggestions?

Thanks.