Odd battery life issues after improvement w/ 5.1

I have an iPhone 4 GSM (AT&T) that was experiencing significant battery life issues with the previous version of iOS (5.0.1?).
After updating to iOS 5.1, the battery life improved signifcantly - I could now get comfortably through a day with 50% remaining at bedtime versus 20%.
In the last couple weeks the battery life started getting worse and worse, to the point where I could barely get home from work and it would be 10-20%. I started to pare back the settings like Location Services, notifications, frequency of email checking, etc. with no improvement. I noticed the phone seemed to be running warmer than usual, so I thought there may be some software issue causing an infinite loop...
I Reset Network Settings as I've heard that can help - no difference. Then I wiped the iPhone and restored from backup - no difference. Finally I wiped the iPhone and set up as New, only installing a few apps and being very conservative with push, GPS settings etc. I am still down to 20% by 5 pm, and this is with light use. Wifi is on all the time, which is what I primarily use, but it never caused this much drain.
It's also quite variable - the other day I made it home with about 70% battery life, but then it dropped 25% in 30 minutes with only light usage (email/web).
Is the battery itself going bad, and/or is there any way I can test it? I got this phone as a warranty replacement (probably a refurb) in July 2011 so I don't think the battery is that old.

Just an update. I totally wiped my iPhone 4, and turned everything off including keeping it in Airplane Mode and it seemed to help a little - it was over 80% at noon without any use. Of course, the phone is useless like this. As soon as I turned wifi on at work (still left the cellular radio off) it started dropping fast.
It must be the battery going bad, but I was just wondering if there are any other suggestions. I don't want to pay to get a new battery installed if I don't have to, since by this fall I will be eligible to upgrade to iPhone 5 if it comes out.

Similar Messages

Anyone else having battery life issues after installing Lion?

Anyone else having battery life issues after installing Lion?

Blue Sun Wing wrote:
I have 7.1
I think I would like to uninstall Lion as well. I'd rather have my battery life back.
See if this is helpful: http://www.iphone-my.com/mac/downgrading-lion-snow-leopard/

IPhone 4S Battery Life: Best solutions and procedures for 1st time user: 1-Do you have a battery life issue (learn first what the usage time spec is about) 2-What can you try to remedy the situation without reading 500 pages of posts

What follows is a grouping of some of the most fruitful procedures - from what I've seen in the biggest battery life issue thread - and some background information and discussion for solving or improving the battery life with the iPhone 4S and may be applicable also to devices on which iOS 5.0/5.0.1 has been applied. Credit goes to the respective users who contributed this information to the forum and they should be commended for doing so. This is not a final listing. The goal here is to provide a first stop sort of knowledge base document for newcomers instead of having them perusing the never ending threads where the wheel is reinvented on every page...
Please don't post your questions, usage screenshots, or claims that it worked or not for you or anything here except PROCEDURES/DEBUG STEPS/SOLUTIONS or improvements to the procedures already listed here. Try to use point form and to be as concise and clear as possible. Hope all this helps.
Thank you and good luck!
General info and specs
First, take a look Apple's battery tips, info and specs(obligatory reading for all Iphone 4S users - read it once and for all):
http://www.apple.com/batteries/iphone.html
http://www.apple.com/batteries/
... you didn't read it? loll Always remember this i.e. the definition of "usage":
Usage: Amount of time iPhone has been awake and in use since the last full charge. The phone is awake when you’re on a call, using email, listening to music, browsing the web, or sending and receiving text messages, or during certain background tasks such as auto-checking email.
I'm still not convinced you read the links so here's what Apple has to say in terms of fine tuning your battery life:
Optimize your settings
Depending on how they are configured, a few features may decrease your iPhone battery life. For example, the frequency with which you retrieve email and the number of email accounts you auto-check can both affect battery life. The tips below apply to an iPhone running iOS 5.0 or later and may help extend your battery life.
Minimize use of location services: Applications that actively use location services such as Maps may reduce battery life. To disable location services, go to Settings > General > Location Services or use location services only when needed.
Turn off push notifications: Some applications from the App Store use the Apple Push Notification service to alert you of new data. Applications that extensively rely on push notifications (such as instant messaging applications) may impact battery life. To disable push notifications, go to Settings > Notifications and set Notifications to Off. Note that this does not prevent new data from being received when the application is opened. Also, the Notifications setting will not be visible if you do not have any applications installed that support push notifications.
Fetch new data less frequently: Applications such as Mail can be set to fetch data wirelessly at specific intervals. The more frequently email or other data is fetched, the quicker your battery may drain. To fetch new data manually, from the Home screen choose Settings > Mail, Contacts, Calendars > Fetch New Data and tap Manually. To increase the fetch interval, go to Settings > Mail, Contacts, Calendars > Fetch New Data and tap Hourly. Note that this is a global setting and applies to all applications that do not support push services.
Turn off push mail: If you have a push mail account such as Yahoo! or Microsoft Exchange, turn off push when you don’t need it. Go to Settings > Mail, Contacts, Calendars > Fetch New Data and set Push to Off. Messages sent to your push email accounts will now be received on your phone based on the global Fetch setting rather than as they arrive.
Auto-check fewer email accounts: You can save power by checking fewer email accounts. This can be accomplished by turning off an email account or by deleting it. To turn off an account, go to Settings > Mail, Contacts, Calendars, choose an email account, and set Account to Off. To remove an account, go to Settings > Mail, Contacts, Calendars, choose an email account, and tap Delete Account.
Turn off Wi-Fi: If you rarely use Wi-Fi, you can turn it off to save power. Go to Settings > Wi-Fi and set Wi-Fi to Off. Note that if you frequently use your iPhone to browse the web, battery life may be improved by using Wi-Fi instead of cellular data networks.
Turn off Bluetooth: If you rarely use a Bluetooth headset or car kit, you can turn off Bluetooth to save power. Go to Settings > General > Bluetooth and set Bluetooth to Off.
Use Airplane Mode in low- or no-coverage areas: Because your iPhone always tries to maintain a connection with the cellular network, it may use more power in low- or no-coverage areas. Turning on Airplane Mode can increase battery life in these situations; however, you will be unable to make or receive calls. To turn on Airplane Mode, go to Settings and set Airplane Mode to On.
Adjust brightness: Dimming the screen is another way to extend battery life. Go to Settings > Brightness and drag the slider to the left to lower the default screen brightness. In addition, turning on Auto-Brightness allows the screen to adjust its brightness based on current lighting conditions. Go to Settings > Brightness and set Auto-Brightness to On.
Turn off EQ: Applying an equalizer setting to song playback on your iPhone can decrease battery life. To turn EQ off, go to Settings > iPod > EQ and tap Off. Note that if you’ve added EQ to songs directly in iTunes, you’ll need to set EQ on iPhone to Flat in order to have the same effect as Off because iPhone keeps your iTunes settings intact. Go to Settings > iPod > EQ and tap Flat.
Usage specs for the 4S - http://www.apple.com/iphone/specs.html:
Talk time: Up to 8 hours (12.5% per hour drain) on 3G, up to 14 hours (7.1% per hour drain) on 2G (GSM)
Standby time: Up to 200 hours (0.5% per hour drain)
Internet use: Up to 6 hours on 3G (16.6% per hour drain), up to 9 hours (11.1% per hour drain) on Wi-Fi
Video playback: Up to 10 hours (10% per hour drain)
Audio playback: Up to 40 hours (2.5% per hour drain)
So a scenario of normal usage could be for example: 4 heavy hours of 3G internet browsing (66.4%), with one hour of call on 3G (12.5%) and 22 hours of standby (11%) = 100%
A battery life issue is a problem where the drain is really out of spec either during usage or standby or both. For example, multi-% per minute drain during usage or a 10% drain per hour during standby is problematic. Browsing the internet on 3G during one hour and losing 16-17% is not.
Apple's test methodology for claiming the specs:
http://www.apple.com/iphone/battery.html
Procedures
davidch tips (reset+full discharge recharge):
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 (tilll it shuts off with the spinning wheel)
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!
ram130's variant of davidch i.e. additional steps:
Now using davidch original steps and attaching the tweaks I made to get me more usage. As shown on page 29.
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 (till it shuts off with the spinning wheel)
5. Fully recharge battery (overnight if possible)
6. Disable Siri 'Raise To Speak' and REBOOT *( if possible use another camera to verify the                 infrared is off after the reboot).
7. Set emails, icloud and calendars to fetch. ** test. Mines on hourly.
8. If your in a no signal and your phone is saying "Searching..." even after 10mins, reboot while in that area and after 1-2min it should say "No Service". This mainly applies to Verizon customers and improve battery life in these areas.
9. *optional* Goto Settings > General > Network and you will see "Hotspot.." loading something, wait a few seconds and it should say "setup personal hotspot" then exit out.
* I notice a great improvement after disabling this and rebooting. This increased my "screen on" usage or at least helped it. Make the change.
** I have not tested push yet to narrow down the drain but I had this change on my phone. I believe exchange push is responsible for some stand by drain. As for icloud, haven't notice much of a difference. Just try it for a day. My email still came in fast most times. Again still testing, will report back on these..
buxbuster tips(wifi sync, iCloud):
These are my own tested workarounds that worked for my iPhone 4S and seemed to have worked for others as well :
Workaround number 1. Deselect wifi-sync in iTunes and press sync.
If that doesn't work try :
Workaround number 2 : Remove iCloud, reset network settings. ( I guess this won't work for you since you don't have it enabled ).
If both workarounds fail, you can always try to completely wipe your phone. That also solved some of the cases out there.
rolandomerida tips - i.e. buxbuster and additional steps:
Finally, I solved the syncing error loop. My contacts are syncing flawessly again between my devices and iCloud, and yes, the battery stopped draining, which is the main topic here.
I followed instructions from buxbuster (check his workaround a few pages up!) and an additional BIG step to restore contacts and syncing, as seen in a MacRumors forum.
This is what I did:
1. Make a backup of your Address Book, using the vCard option (or both, it doesn't hurt). Save it for later.
2. In your iPhone, delete iCloud account. When it asks, accept both: delete AND delete from my iPhone.
3. Reset network settings. The iPhone will restart, then will ask you to unlock the SIM card.
4.Turn Wi-Fi on.
5. Add the iCloud account again.
That's for Buxbuster's workaround. For some, it might work just like that. My iPhone repopulated from iCloud after step 5, but I still had that "server error" on iCloud. I had to do some extra steps, since my Mac was not syncing to iCloud and couldn't edit anything on my Mac or iCloud. Syncing back had to be fixed, too. If not, the syncing loop would continue from my iPhone, and the battery would drain awfully again.
1. In System Preferences -> iCloud, I turned Contacts off. I chose "keep on My Mac" those contacts, but I got an empty Address Book after a while. And a few minutes later, iCloud contacts were empty and my iPhone also. It is scary at first! Now, before importing that vCard backup...
2. Turn Wi-Fi off. This is important, since your contact-empty iCloud will attempt to wipe your Address Book from your Mac in seconds after importing.
3. Import your vCard backup to Address Book. Just drag it to your blank Address Book window; it asks if you want to import "x" number of cards. Of course, say yes.
4. Turn Wi-Fi on, and then iCloud contacts on again (System Preferences -> iCloud). It will offer to merge your newly populated Address Book with iCloud (which is empty at this point). It should upload every single contact to iCloud, and then to your iDevices. If not, a fifth step would be to import the vCard file to iCloud, but it shouldn't be necessary.
So, with iCloud syncing working correctly, there is no battery draining! Again, that was my particular issue.
I can't tell if this is the single answer to the widely spread battery draining problem, but it sure can be fixed with these workarounds, and yes, Apple should address the problem with a future update, for we affected customers don't need workarounds in the first place
This is the MacRumors discussion:
http://forums.macrumors.com/showthread.php?t=1256807
And dont' forget to check buxbuster's fix, video, and THANK him!
Miless tips (full 800mb release of 5.0.1 and sanitizing a restore):
As for 4S battery life. Try doing this,
1. Settings>Location Service ... disable all location services you do not need. In particularly Facebook because it drains the battery a lot.
Scroll down to the bottom at Settings>Location services>System Services ... Disable Setting Time zone, location based iAds, Diagnostic & Usage.
2. Settings>Notification>Calendar ... turn off the Notification Centre.
3. Settings>General>Reset ... do Reset All Settings. Doing this will not wipe out your iPhone. It will just Reset the network settings, location warning, keyboard dictionary, etc... but it will clear up some corrupted data there. Generally this will help.
Try these 3 steps first... if it still drains a lot, try the following,
4. Drain your battery down to 1%. Then charge it up using USB from PC ... not the charger. The charger output 1.0 A ( x 5V from USB ... you get 5W power). From PC, output is only 0.5A x 5V = 2.5W power. Charging is slower but trickle charge 4S helps the battery retain its charge better. I think it takes about 3-3.5 hours to charge full from USB/PC compared to slightly below 2 hours using iPhone charger.
If after doing the above still could not solve your battery issues (mine with iOS 5.0 was ok up to step 4, but not iOS 5.0.1).... plug you iPhone to a charger (any charger), from iPhone, access your iCloud ... set it up if you havent. Back up your iPhone data to iCloud. if you do not have enough storage (only 5GB is free), go to details and select the apps you need its data backup, choose only those you really need and leave those unnecessary ones out. Back up your camera roll to your PC/Mac manually as it could be too big to backup to iCloud.... once you have it setup, make sure you are on Wifi ... tap backup to iCloud from your iPhone. It will take a while if the file is huge.
Once backup to iCloud is completed, plug your iPhone to PC/Mac and launch iTunes 10.5.1 (make sure you have 10.5.1)
Click Restore. It will automatically initiate a download of iOS 5.0.1 ipsw for iPhone 4S. Wait for the whole process to finish, ie. download, restore software/firmware.
Once its done, do not set up your iPhone from iTunes. Set it up on your iPhone. Go through the selection. When prompted, select restore from iCloud (from your iphone backup earlier). Keep your iphone plugged into iTunes while restoring backup from iCloud. Because while restoring from iClouds, some data will be synced from iTunes if you plug in, e.g. music, video, etc... unless you bought these content from iTunes store. Apps will be downloaded from App Store from the cloud.
Once it's all done restored. Turn off your iPhone,.. and turn it on again.
Now, hopefully your battery wont be draining so fast anymore. Usually it wont after this. But you need to charge your battery at least 4-5 cycles to stabilize the charge on the battery. I dont know why... but battery life seems to get better and better for me after a few charge cycles after all the above work.
Good luck. Let us know if it works for you.
W. Raider tips (Sirii):
Bottom line for me of things that helped battery life are:
1. Turing off Siri and Rebooting the phone by holding the Home button and Top button down, ignoring the slider, until the phone shut down. (turn off Siri, reboot, and check top front of iPhone 4S against a lesser camera like the front-facing camera on an iPad2 - making sure the IR sensor is off)
2. Fully draining the battery, meaning using the phone until it shuts itself off from a drained battery and then recharging it to 100% about 4, maybe 5 times. I charged it both with a Mac and a wall charger.
Hope this is helpful!
Comments
jmm514 remarks (Twitter):
I may have found something. I had Twitter disabled in my notifications, but got a tweet today that popped up on my home screen. Didn't know I had this enabled. At the bottom of the Twitter notification settings is the home scrren toggle. Since disabling this, battery life seems better. Considering there is no setting for frequency of checking for tweets, it appears the phone is continually connecting to wifi to check for new tweets.
tmksnyder comments (notifications, corrupt data in iCloud):
For me, I found my iphone on wifi mysteriously connecting to my mac. I eventually narrowed it down to the Apple Move Trailers app which keeps a file in iCloud. The phone was trying to sync the file with the mac in the background even when the Movie Trailers app was closed (hitting the red x). Based on my macosx logs the iCloud process that was trying to sync was working directly between the phone and the mac without using itunes by connecting to an https address hosted on the phone. It was connecting every 3 minutes and failing (while phone was awake or awake during during a notification). I also found that iCloud control panel on OSX would error if I tried to delete the file. I fixed it by removing the App and doing a hard reset which stopped the sync. I probably could have turned off iCloud document sync in the phone but didn't think of that. My battery life has greatly improved while at home on wifi.    I am now at 28 hrs standby, 2 hrs 20 minutes of usage, and 68% battery. It was ok before where I could get 20-30 hrs standby and 6 -8 hrs usage. My usage today was phone calls, 3g surfing, and music via bluetooth in the car.
I also found even with Itunes iMatch, if I mass updated tages, art work etc, it would hit the phone on wifi even in standby. I was amazed.   Granted if I am not doing updates, Match won't hot the phone so this was a once in awhile event. I could drop my percentage by 5-10% in a matter of minutes when doing updates.   I think a lot of our problems are background processes, associated with iCloud, notification, and apps. More features means more battery.   I think the key thing is to keep track of what has recently been added or changed if battery life gets worse all of a sudden.   It may be an app that was recently installed and if possible you may want to completely remove it and not just quit it.
With twitter, i think it uses push notifications so it doesn't need to be running and actively poll on the phone. For instance , if i quit the mail app, i still will get mail notifications and can swipe the message and load mail. Apple Push Notifications servics maintain the connection to the phone and there are likely pings or connection checks that occur for the service on an os level not an app level. This minimizes the load so there arent a bunch of apps all runing and constantly checking. The notification service , if it is contacted from twitter or another service with data, will check the settings you have registered to the with the apple push service and send the notification to your phone. No matter what, there is a drain with notifications. M hunch is once one application is configured to receive notifications, connection checking occurs betwen the push service and the phone so it knows where it is on the network. If it is implemented correctly, these checks arent frequent if you are still and more frequent as you move. The other drain is for when the noification hits and is processsed. If i get 9 emails over night, my screen just popped up for 20 seconds or so to process each message using battery. I would even think that just go from low power to turning n the screen uses more juice than if the device was already on and i get the message. On nights I get no notifications, I see a 3 or 4 percent drop. On nights with a number of notifications, i have seen up to a 10 percent drop. Besides notifications, wifi sync and icloud will poll on the local network and use up battery if the host computer is on and running itunes or trying to sync a data file that is corrupt (which i had with the apple movie trailers app causing my phone to drain). For me turning off wifi sync and remving a corrupt file in icloud solved my battery issues and I get over 24 hrs of standby with 6 to 9 hrs of use and this is with all the normal location services and push serivices turned on.
See http://developer.apple.com/library/mac/ipad/#documentation/NetworkingInternet/Co nceptual/RemoteNotificationsPG/ApplePushService/ApplePushService.html for more info. I think it has a good overview of how the notifications work.

Well seems like that rumor of iOS 5.0.1 is finally gone the way of the dogs since developers got a beta of 5.1. So as stated earlier in the master discussion-> I suspect if you are filling up this thread with false post or creating a master set of links to various post that are unreliable you are wasting your time. Press is not going to touch the story due to poor or inaccurate sources which may be links from the master thread. This can include inaccurate information, combination of conflicting post or postings from users which may not own the device. Reputable press organizations have policies that require discloser and strict rules about what is a reliable source for a story. It is clear that many of the post in the master thread, which are links presented here are questionable.
Sorry to say that postings taken without any analysis of their totality have been propagated via various sites, for example sites such as http://www.2012federalbudget(dot)com. (Do not visit but I suspect that this is not the 2012 federal-budget site you would expect based on analysis of the records. There are plenty of sites like http://www.2012federalbudget(dot)com propagating questionable post in these threads.) One site for example in the discussion thread used a self signed certificate, the site had a log in to allow users to enter their OpenID. Seems many of these sites are pop and drop drupel configurations.
So remember this is how the really bad rumor of iOS 5.0.2 got started, the 5.1 memory leak issue, iCloud Issues, call quality, address book, etc.
Some of the postings have been very comical, I think the latest now is a dropbox issue. Seems that the length of the previous thread has resulted in various app engines of some proxy servers/tools reaching their limits.
So I would make sure to know the source of any information you link to. Make sure you avoid entering any information to outside links such as OpenID or Apple ID, these are big prize items for anyone with malicious intent. If you have issues and are a valid user contact APPLE CARE. (Note link is using McAfee Secure Short URL Service, and is https.)
http://mcaf.ee/ricdt
The original solution still represents a high level of success for users having any battery issues.
Install 5.0.1 on your iPhone 4s. Some users posting they are still using older versions, bad fake serial numbers, etc.
Make sure your device can run iOS 5.0.1 and is not altered.
Make sure you use a new Sim, not some cut down version which many users admit to doing. (Again, worth confirming what people are posting.)
Reset the device doing a hard reset and software reset.
Let battery drain and then charge for the full cycle, which is 24 hours.
I think you will find you will get the battery usage that APPLE has stated for the device.
Best of luck, stay safe and thanks

Battery life issue, phone shuts down

HI I have an iphone 4S running 6.1.1 and with 10.6GB avail space running 3G on the Fido network. Had the phone for less than a year and it was sent to me as a refurbished
My phone shuts down before it gets to 0%. Sometimes it lets me get to 0% and does a normal shut down, but in some cases it will suddenly just shut down and claim it has no battery life left, then when plug in loads up right away, exactly with all the same apps open and with a good chuck of battery.
Today for example
- Was at 70% when went out on a bike ride
- 2 hours later and after some tethering and listening to music it shuts down all of a sudden while looking at a tweet
- Try to turn back on, says its out of battery
- Get home and plug in, starts up at 17% right back at the same tweet

I have the same issue with the same 4S. I thought it was a bug with the camera because it would happen while I was in the middle of taking a picture. The phone would shut down and after attempting to restart it prompted no battery life. But once I plugged the phone in it would start up and show the proper battery % left on the phone.
Another forum on here stated a probelm is with the cold weather which was cauing the battery to lower in tempature, falsly causing a depleted percentage which forced a shutdown. They said all they had to do was let the phone warm up and it would reboot back up just fine.
I thought it odd but most of my issues were when I was outside. That is until just last night when I was in my kitchen taking a picture of something on the counter and it again shut down. I had to plug in the charger, boot it back up and once back up I went right back to the kitchen and tried again and it happened again. So I plugged it in again rebooted and then unplugged the phone and let it sit about 10 minutes on the counter and then tried again and it worked. I am not sure the cold had anytyhing to do with it this time because I had been home a couple of hours already and my home is 70 degrees. It is frustraing. I find myself caring a backup battery to plug in the phone if and when this happens when I am away. Not a good solution.

Lumia 1520 Battery Discharge Issue After Updating ...

After updating to Denim, my Nokia Lumia 1520 started to experience the following symptoms:
Phone charges to 100%, I disconnect and use an app like Instagram BETA, Internet Explorer, Lumia Camera, or any game--after no more than 5 minutes of use, the phone gives a "Critical Low Battery" alert and shuts down. If I try to restart phone immediately, it makes it to the AT&T splash screen or lockscreen and then same battery message appears and shuts down. If I wait 10-15 minutes after the shutdown to restart phone (without recharging) the phone will stay on, but battery level will report to be in the low 20s or 10s (whereas no more than 20 minutes ago, it was 100%).
When phone is at 100% battery: I take 2-5 photos or record mere seconds of video and I get the same "Critical Low Battery" alert. Upon restarting, some of the photos or video are nonexistent or corrupt files and battery level is reported at 2-5%.
However, if my phone is plugged in to charger, none of these "Critical Low Battery" alerts come up and I am able to use phone as usual. Considering that I cannot take a vacation and capture nature's beauty with an AC adapter always connected, this is a serious drawback.
Steps I've Taken:
Soft-reset
Full factory-reset
Moved all apps off microSD card (this improved situation maybe 5%)
Disabled almost all background app use in Battery Saver
Replaced microSD card when I thought this was a memory write/read issue
Installed "Battery" app to monitor battery use. After 750 data points were logged, my average battery life is reported at "16 minutes," which sounds about right.
My warranty should be expired since I purchased the phone December 2013, so I'm checking in here if anybody has had any luck with battery replacements or with a solution to this issue? At the same time, this issue arose strictly after updating to Denim and I've seen other users report this EXACT scenario. Is there any hope for Lumia 1520 users on this?
Other reported cases:
Battery Issue after Denim update: http://forums.windowscentral.com/nokia-lumia-1520/347112-battery-issue-after-denim-update.html
Battery critically low and shutdown: http://forums.windowscentral.com/nokia-lumia-1520/342343-battery-critically-low-shutdown.html

Hi albertico, TeJazz, and Samgh. Welcome to the Microsoft Mobile Community. We understand your situation and in response to this issue, we suggest that you perform the suggestions in the photo attached. If the issue persists, we recommend recovering your phone's software using the Windows Phone Recovery Tool. This link will work regardless of your location. If the same thing happens, it's best to take your phone to the nearest Care Point in your area for evaluation. Backup first to avoid data loss.
Attachments:
Battery drains fast.JPG ‏147 KB

Macbook Air mid-2012 battery life issues -- a possible culprit ?

Hi all,
I've posted and followed a thread regarding diminished battery life for the mid-2012 MBA, when Mountain Lion was released. I never could fix the problem, was contacted by Apple but that didn't solve anything either.
The troubles I was (and still am) having with my MBA were :
Battery life reduced by at least 33% when I upgraded to Mountain Lion from Lion, following a firmware update.
No change when I clean installed ML.
No change when I upgraded, and then clean installed Mavericks.
My battery, after 13 months of use, had its capacity reduced to 70-80%, and has now been stable for one year at 70-80% capacity. It now lasts approximately 3 to 4 hours, and has never lasted longer than 5 hours since I upgraded to ML, which was a few weeks after the laptop was purchased...
I've tried everything that was posted on the forums, SMC resets, etc. Now to the (maybe) interesting stuff.
I stumbled today on something interesting. I was researching my issue to see if people with the same laptop, that followed the same firmware upgrade path than I did had similar issues. Long story short, a forum post led me to something interesting, located at /System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/Plugins/ACPI_SM C_PlatformPlugin.kext/Contents/Resources
DISCLAIMER Whatever you do, do not try to remove / move anything in this folder.
What is interesting is that my Macbook Air has the following identifier : MacBookAir5,2. However, in the above-mentioned folder, there is no MacBookAir5_2.plist, it stops at 4_2.plist and then goes on to MBP models. Now, the question that I have is could the fact that this plist is missing be related to my battery issues ? In the sense that without this file, the kernel does not know how to properly manage the power, read the battery status / thermal sensors ?
I would really love to fix this 2-year old issue that has been plaguing my laptop ever since I purchased it.
Cheers,
Hadrien
Message was edited by: hricca
Edited to add a screenshot of the plists directory.

I leave my LithiumIon battery plugged in when near an outlet. But I use it on battery down to 40% at least once a month.
Using Coconut battery (download from macupdate.com) you see my battery is just fine after 18 months:

Massive battery life drop after Internet Recovery OS re-install

Hey,
A couple months ago, I made the brilliant decision to try to install Windows 7 with Boot Camp at 3am on a weekend after several days of no sleep (unfortunately, this is one of the least-poor poor decisions I've made recently, but I suppose that's for another forum). Long story short, Og turn on MacBook, Og open Disk Utility, Og click-click, SSD go bye-bye—formatted, every last bit of it (haha, me make pun-pun!). Luckily, ML ships virtually tard-proofed, so there's little I can do besides showering with Bernie (this pun courtesy of the 'lil sis; I'm innocent) to make him breathe his last. This little bit of Apple genius is irrefutable proof of God—praised be his noodly appendage. But ever since Internet Recovery blessed me with Bernie II (R'amen), I've noticed during countless nights lying with him in bed that his stamina has decreased significantly, versus his pre-IR days. I can't give you firm numbers of his endurance before the operation, but now, after even the least vigourous play, he's drained beyond further exertion after no more than 2-2.5 hours. I've tried various tweaks to increase battery life—making sure his mail parts are only shooting off when I work them manually, the same for receiving messages as well, and I've been monitoring his GPU usage; thanks to ML he's much more conscientious about being discrete, and I rarely have to limit him to using his integrated components. (Note: I'm using writing this as an excuse to start an essay, and its foundation really needs to get laid ASAP, so unfortunately the allusions/euphemisms stop here.) Again, I can't give precise numbers about its original battery life, but I was blown away by it, likely averaging at or in excess of the advertised 7-hours. I'm a geek and spent my childhood with eyes never further than a couple of inches from my CRT (and have the vision to prove it), but I really have no f'ing clue what would be causing this. I never doubted that the battery life decreased (and dramatically so), but now that I've started booting up into Windows regularly, any trace of doubt has vanished. Using Windows 8 set on Maximum Performance (and, as I'm sure most of you are aware, Windows only uses the discrete GPU, even when doing nothing graphically-intensive), the battery life is still significantly better than using ML. I've searched and searched and searched and can't find a single reference to this issue online. I'd appreciate any help you can offer. Just in case it's of any assistance, I'll put some might-be-relevant-maybe info below, including things I've thought of that could be the source/contributing to the problem (again, I really have no idea what I'm talking about when it comes to true geek know-how):
- It's a rMBP 15" w/16GB RAM
- When I formatted the HD, I wiped out everything. Yes, obviously there was enough on there for the laptop to launch into Internet Recovery, but I'm thinking that was all that was left. When I've been trying to think of why there's nobody online with this issue, something that's popped into my head is that anyone who knows what Disk Utility does is probably savvy enough (when not sleep-deprived) to not use it to format their HD, or at least to heed to the plenty of "Don't click yes, tardums" warnings that I'm sure popped up as I zoomed by them. And I can't think of many other ways for grandma-level Mac users to wipe their HD, so the lack of online info would make sense.
- This was a couple months back, and I can't remember precisely the OS version when all this went down. I'm certain it was ML since I think my rMBP shipped with 10.8.0 (if not 10.8.1, if any did), but it could have been anything between 10.8.0 and 10.8.2. I'm pretty sure it wasn't 10.8.0 since I remember updating to 10.8.1 very soon after purchasing the laptop over the summer, but again, not certain.
Alright, that's it. I'm sure this post doesn't meet forum standards for plethora of reasons, but I'm a poor little private liberal arts university student who is desolate now that his $3,000 laptop isn't getting top-notch battery life, so mods, please dig deep in your hearts and don't delete. Thanks, yous da best.
-Zack

There were a number of posts from folks with various models about a downgrade in battery life after an upgrade to Mountain Lion - so you aren't alone. However, since you're still under warranty, I would take the machine to your local Apple Store or an AASP and have them diagnose the problem. Could be that your battery just isn't up to par (and I'm assuming that you've all updates installed?)...
Good luck,
Clinton

MacBook Pro 15" Battery Life Issue

I have a MacBook Pro 15", with a processor 2.4 GHz Intel Core i7 and memory 4 GB 1333 Mhz DDR3 running OS X 10.7.2. It was purchased only a week ago and I'm noticing horrible battery issues. I have checked Activity Monitor and nothing, even while I'm browsing the Internet is using a large amount of CPU, so I'm a bit confused. I know that this is an issue that many people are facing as I can see from all the other discussions. Has anybody found a solution to this issue at this point, or has Apple released any information about an update ot fix the issue, anything at all? Just pretty disappointed since I came from an early 2008 MacBook Pro which had about a 4 hour battery life and was expecting a new Mac with 7 hours at least. Thanks everyone for the help, sorry for a question that I'm sure every is sick of.

Calibrating the battery is a slightly more specific process than Chris suggests. Instructions are here:
http://support.apple.com/kb/HT1490
It's important to follow them to the letter, paying attention to the specified wait times after charging and discharging.

Battery life issues on iphone 5 with ios 6.1.4

I had upgraded the OS on my iphone 5 to iOS 6.1.4 and now I am facing extraordinary battery drain. I left my phone at 35% battery life while going to sleep and when i wake up, after 8 hours, it has gone down to 8% and less. This was not the case before with the earlier version of iOS or my iphone 3gs. I have tried some tips and suggestions but I dont think those are really helping. Could someone please help me out as to what should be done in this case.
Hope Apple is listening and intend to do something. My phone is brand new and not even a month old.

No i do not have LTE network access at home.
My cellular reception is quite good at home as well as work.
Yes i am using an exchange account, gmail.
This is what i have tried..
turning off SIRI, auto adjust brightness, push messages, notifications, blah blah blah...
Seeems like deleting and adding the mail account once again helped, as i am experiencing a better battery life today. I had read about this somewhere but weired that this could be a solution to a battery drain issue.
But still I am planning to take the phone to a store to get its battery checked.

Battery life halved after hard drive and ram upgrade

I upgraded my hard drive to a wd 1 tb scorpion blue and upgraded the ram to 8gb. Now the battery life is less than halved. The speed has not improved or decreased , I'm happy with the drive performance, but am considering going back to the standard 4 gb ram to try and improve the battery life. Does anyone have any suggestions?

Yes that looked like the main problem, battery indicator has come back up on idle at least. It still suffers on application use, (aperture ) seems to have lost 30% during usage, but still better than after the upgrade ( used to be 3 hours now 2 hours, remaining time during importing as opposed to 1 hour after upgrade)

MacBook Pro Battery Life Draining After Updating to Yosemite

Hi,
I have a 2011 MacBook Pro. After updating to Yosemite a few months, I have experienced a severe loss of battery life. I was averaging around 6-8 hours on a charge, and that is now down to about 3. I have reset the PRAM, etc. and SOMETIMES that will work but not always. I typically have only one program running at a time, Chrome, but sometimes it's a mix between Chrome, Windows, iTunes. But my computer usage patterns have not changed since before/after updating. The only thing I can think of is that it is caused by Yosemite.
When I check my Activity Monitor, the apps with the highest CPU usage are WindowServer, kernal_task, and Chrome Helper. I have also disabled several plugins/features of Chrome to no avail.
Has anyone experienced similar issues or have any suggestions?
Thanks!

Is one of the 'etc.' a SMC reset?
http://support.apple.com/en-us/HT201295
Ciao.

Battery life drops after Mountain Lion and then hard drive crashes. Coincidence?

On October 20, I purchased and downloaded Mountain Lion for my 2009 MacBook Pro. I soon began seeing a decrease in battery life. When hovering over the battery icon to check the time left, I noticed it said "Service Battery". The notebook otherwise seemed to operate normally. I should also note that I've never had any other problems with this MacBook Pro. By November 18, without any other problems, the hard drive crashed and was irreparable, costing me over $200 for replacement. This should not be a part that needs replacement on a 3 year old computer. Coincidence that these events happened so close in sequence, I think not. If the battery problems are known to Apple through the discussions on the Support Communities, why hasn't Apple issued a patch 4 months after the release of Mountain Lion? The new hard drive was installed running Snow Leopard and I intend to keep that OS. It's really a shame because ML has some nice features that SL does not offer. I also will not be purchasing any new Apple OS until the program has been out at least a year to allow Apple to work out the known, potentially costly problems that they seem to knowingly ignore. I'm a loyal Apple customer but this incident will have me thinking twice before running out to purchase any of their products and software immediately upon release or even a few months after.

Have you followed these instructions, specifically formatting your new HDD?
http://support.apple.com/kb/ph11273
Ciao.

Battery Life Degrading after upgrading to Mountain Lion.

Hi Community Members,
Just after purchasing the Mid 2012 Macbook Air 13", the battery life was good 7+hours for usual use, including browsing, emails, vpn access etc. After upgrading to ML on 26th July 2012, the battery life depleted down to barely 3.5 hrs now, very disappointed with this experience barely after a few weeks of this new portable. Tried some workarounds for like the SMC reset, uninstalling Flash etc but no success. Don't have power nap enabled which a lot of people feel is the reason for the battery draining out. More concerning is that the FCC ( Full Charge Capacity) has dropped to 96% ( 6431 mAh) from its original 6700 mAh with the Power Cycle count as 24. Spoke to Apple Care today and has been advised to do a Battery Calibration and then get the battery checked up at an Authorised Service Centre. Apple claims it has nothing to do with the Mountain Lion upgrade. Will come back with more updates tomorrow.
Any workarounds or success stories with others ?? Very unhappy and disappointed with my new Mac !!!
Cheers
Som

Welcome to Apple Communities
http://www.apple.com/batteries/notebooks.html OS X has got issues with battery life, so wait an update for 10.8

Battery life poor after last OS update

HI. I updated my Q10's OS last week to version 10.3.1.1565. Since then the battery life of the Q10's battery has reduced from lasting from 6am to 4:30pm with some heavy usage to not lasting past 10am with very little (if any) usage. All apps I run actively during the day is BBM and Whatsapp. Rest of the apps are closed.

iam facing same issue after succesful OS update
1.notification volume have substantialy lowered
2.battery life is poor, after 12am phone is idle till 6am and evrynight phone dies even after 60% remaining battery in morning phone is OFF.
3. phone heats up during calls and when idle

Battery life shorten after upgrading to Mavericks

I have a mid-2011 Mac Book Air and upgraded to Mavericks recently.
I noticed my battery life have shorten from 10+ hours to aournd 6 hours with 100% baterry charged.
Did some search on this forum and it seems to be a known issue.
I did a clean install (wipe the entire SSD) with only base OS.
Any suggestion?
Thanks!

You raise what I think is an interesting point, maxchlin. [Odd that when I tried to Copy & Paste your name from above, the Hot Link pasted. So I typed it letter by-letter, instead.]
To be honest, I didn't even think about Battery Usage with Mavericks. (My not-thinking is because I use an iMac, that plugs-into a socket in the wall.)

Odd battery life issues after improvement w/ 5.1

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