Battery Life Worse on iOS 5.1

MacBookPro13"

macrumors 6502a
Original poster
Jan 25, 2011
588
0
Ireland
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I don't know about anyone else yet but since the 5.1 update I have found my battery life to be significantly worse.

Since taking off charge, 1hr 2mins ago and 40 mins usage - there is 83% of battery left.

The phone has been using 3G but I have been mainly using it lightly, couple of iMessages, Twitter (5 mins), Facebook (5 mins) and checking my email.


This would have taken maybe 5-7% on iOS 5.0.1 max. I can't believe it.
 

Broph

macrumors 6502
Jun 23, 2010
331
43
New Zealand
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I can't believe mine, I've been using it for 26 mins since last full charge.. Made a call, playing games, web browsing, facebook, installing apps, and it's still at 100%!

EDIT: I've noticed that the usage and standby time go up at the same time. They're both at 29 mins now, battery still on 100%, and I haven't really had the phone on standby at all. I'll restart and throw it on charge overnight. May be a bit of a bug

EDIT 2: after a restart, the battery percentage is going down, but interestingly enough the standby and the usage time go up at the same time. Ah well. Battery seems pretty good though. Will let you know how it goes tomorrow.
 

MacBookPro13"

macrumors 6502a
Original poster
Jan 25, 2011
588
0
Ireland
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Interesting. Thanks for the reply. Hopefully when I'm back home using Wi-Fi things will improve.
 

Elven

macrumors 6502a
May 13, 2008
859
1
UK
Too early for me to mention however I am noticing my iPad 1st generation is noticeably quicker, and now charges to 100% over the 99% previously.
 

01jamcon

macrumors 6502a
Jul 24, 2006
511
0
London
This is ridiculous, iOS5.1 hasn't even been out for 24 hours yet and people are already claiming its worsening battery life. Making subjective judgements over such a short period of time are almost certainly going to be wrong. Test it for at least a week then see if its really had an impact on battery life, I'd be willing to bet that it hasn't.
 

MacBookPro13"

macrumors 6502a
Original poster
Jan 25, 2011
588
0
Ireland
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So my phone dropping 16% after an hour is just fine? When on the previous OS version, it would have taken a lot longer to go down by that much (which was also considered poor).

It's too early for me to say its after worsening?
 

ApplesAndOrangs

macrumors regular
Sep 30, 2011
181
0
MacBookPro13";14456601 said:
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B179 Safari/7534.48.3)

So my phone dropping 16% after an hour is just fine? When on the previous OS version, it would have taken a lot longer to go down by that much (which was also considered poor).

It's too early for me to say its after worsening?
Yes it is too early. The battery might not be collaborating correctly yet with the new software.

This goes for the '3 hours use still at 100% battery' posts as well.
 

pmau

macrumors 68000
Nov 9, 2010
1,547
789
In my experience it is always a good idea to restore the phone and restore it from iCloud instead of updating.

All "other" data that was not included in iCloud will not be restored.
Somehow iOS feels smoother after doing that.

That's my subjective opinion.
 

MacBookPro13"

macrumors 6502a
Original poster
Jan 25, 2011
588
0
Ireland
Charging now from my laptop and going to be using the Wi-Fi in college so should see a difference there. Still pretty disappointing though.
 

Grayburn

macrumors 68000
Jul 12, 2010
1,776
120
London, England
I charged my 4S before going to bed and then unplugged it. Normally it would fall to 60% after 8 hours not even being used, this morning it was at 91%.
Strangely my battery performs better if i fully charge it before going to bed and then leave it idle while i sleep then if i leave it plugged in through the night.

It drains quicker from doing the latter :confused:
 

asdCLOT

macrumors newbie
Mar 8, 2012
2
0
GUYS, after the update is done. Do a hard reset, holding sleep/wake button with home button until the device switches off and on. Then witness the magic of ios 5.1.................... :)
 

manny12

macrumors newbie
Oct 18, 2011
2
0
My battery life is definitely worse after 5.1 upgrade.

My battery stayed at 100% for about 20 minutes, gave me false hope because ever since its been dropping FAST! I'm at 24% with 3 hours since last charge and only mail app open, far less than I usually use.

Apple needs to fix ASAP.
 

gytisc

macrumors newbie
Mar 10, 2012
1
0
MacBookPro13";14456816 said:
2 and a half hours off charge and the battery is at 50%. How can I get through my day like that?
I had the same problem with my iPhone 4s drainning battery and even heating while in the pocket after I updated to iOS 5.1. I tried everything: closing all apps, rebooting, hard reseting, even disabling WiFI, 3G, mobile data, notifications, location services, Bluetooth, etc. Although "disabling everything" helps to prolong the life throughout the day it's not the solution :(
So, the final option was to try resetting to factory settings. I did double backup to iCloud and iTunes, transfered all purchases from iPhone to iTunes, did resetting to factory settings and restored from iTunes backup. I can confirm that this solves the problme and my phone went back to normal. The only downside of restoring from backup is that you need to put all non Apple apps back to folders manually, so it took for me few hours as far as I had more than 200 apps :). If you also have a lot of apps arranged into folders, I recomend to do screenshots (Home+Power buttons) of every screen and folder.
 

Leonard1818

macrumors 68020
Nov 15, 2011
2,459
393
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B179 Safari/7534.48.3)

I can't believe mine, I've been using it for 26 mins since last full charge.. Made a call, playing games, web browsing, facebook, installing apps, and it's still at 100%!

EDIT: I've noticed that the usage and standby time go up at the same time. They're both at 29 mins now, battery still on 100%, and I haven't really had the phone on standby at all. I'll restart and throw it on charge overnight. May be a bit of a bug

EDIT 2: after a restart, the battery percentage is going down, but interestingly enough the standby and the usage time go up at the same time. Ah well. Battery seems pretty good though. Will let you know how it goes tomorrow.
if your usage and standby are the same, something isn't right.
 

capcaveman

macrumors member
Oct 4, 2011
58
5
Had same problem, was told here on the forum to try a hard reset. That seems to have done the trick.
 

parseckadet

macrumors 65816
Dec 13, 2010
1,119
623
Denver, CO
I'm one of those who's very happy with the 5.1 update. Before the update my battery would be down to about 60% by noon during the week. Now it's more like 80%. Big difference in my book. It also seems to have resolved my issues with Safari on my iPad 1.
 

ijha

macrumors regular
Aug 20, 2009
109
0
I created a similar thread under the title of 'my wife's iphone shows 'ghost usage time'.

After the upgrade to 5.1, the usage time and stand-by time is the same as previous posters noted. As a result, it loses 20% over night. It is specific to 5.1 as the phone was perfect before the upgrade.

Already the deepest clean-install was done at Genus bar but the problem persists.
Full recharge was also done. No fix.

Right now, I don't know what to do.
 
Last edited:

lampshadecollar

macrumors newbie
Mar 13, 2012
1
0
It's a PROBLEM and it's REAL people

Terrible battery life now days after the update and many complete drains and recharges. Absolutely didn't have this problem before the update.

"Restart the device!" "Reset and restore!" ...sounds like exactly the kind of balderdash the Apple crowd used to make fun of others for!