Lumia 920 battery life issue

I have a small battery queries on my phone, Lumia 920. The phone is new, I am approx. 1 month of goes perfectly, only last night I noticed a strange thing, I say. I had to hang up (shutdown) because I was in a medical practice with 12% battery status. After about 2 hours we reopened (power on) and found that my battery status shows 74%. And went so until the next recharge, about 36 hours. It is normal to happen? Thanks in advance.

It is not normal but it can happen. Battery meters are very approximate and readings are based on output voltage which can sometimes temporarily dip or rise due to use.
You can minise the discrepancy by calibrating the meter. This is done by running the battery down and then charging till full without interruptions.

Similar Messages

Lumia 920 battery life suddenly changed

Hi, everyone. I am a newbie here. I had my red 920 since 11/9 and it has been great until this Tuesday. Previously the battery was great and after full charge it usually showed battery life 1day or even longer. This Tuesday I used camera a lot. The handset did get warmer because of flash and focus assist lamp. After that night the battery darin rate became really fast. After one overnight charge 100% battery only shows 9hours and drain rate was like 10% per hour. Any one has suggestions why this occured suddently? Do I need to reset the phone to factory?
Thanks a lot
Lee

Hi
I had similar issue I went to Microsoft store,they didn't understand the problem.
they said background tasks, WiFi,location service etc. Everything was offline.
The issue started after December patch update.
The system keeps dropping signal very often and it tries to reconnect to 4G and LTE making battery drain, This is as per the Tech at Microsoft store...
Use wall charger for 3-4 hours. That helps. Also let the battery drain to less than 10% and charge , Turn of all your background tasks that helps...
No word from Nokia yet., Wireless charger doesn't work well.
Also when i tried logging in from Lumia 920 to post this message, the popup login on the sign in doesnt work. Also when you post the scrolling doesnt work really well like on the desktop. Not sure if its the site issue or IE10 issue
The Spell check for Lumia is still not fixed. it suggested Aluminia... can some mod from Nokia put in a request to fix this ?
Regards
K.R
KR

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

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.

Lumia 1020 battery life with here+

My Lumia 1020 battery life is very poor when using here+ for navigation. The phone also gets hot. Typically it only can be used for about two hours.
Even when connected to the car cigarette lighter outlet the battery consumption is faster than charging and the phone gets hot.
Is this normal or should I send it for service? The phone is about 4 months old and in normal use the battery life is more than one day and I have not noticed any heating either. I have installed all available updates regularly. I have also installed the maps I normally use into the phone.

Thanks,
I understand TomTom is not a phone and has less fuctions than Lumia. For this reason its power consumption should also be lower. I believe though, that a phone maker like Nokia has put a lot more efforts to reduce and optimise power consumption.
I have now been testing with a 3.1 A charger in the car and it is able to charge the battery while navigating. The device does get hot, however, but as you say it is normal.
I did also try to use it when biking and was using a 10 Ah Powerbank with 2 A outlet. That did not seem to be able to overcome phone's power consumption, but the battery was slowly reducing charge. This arrangement would anyway allow several hours navigating, which is quite enough for normal use. Without this external battery its useless for longer biking or walking tours, unless you turn off navigation when it is not necessary. This is a bit complicated, though. TomTom is even worse for this kind of off-line use, its battery seems to be quite small.
I also noticed that it is important to remember to turn off navigation when keeping the phone in pocket, it really gets uncomfortably hot there.
I'll also have to study Lumia's manual a bit more carefully, as I had often difficulties in changing targets and turning off navigation. Probably just because I had misunderstood some instructions.

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/

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

Nokia Lumia 920 Battery estimated time remaining m...

This morning when I checked the battery info, it was at 39% with 31 days and 5 hours left…
So I checked it again closer to 1 PM and found it remaining at 39% with 38 days and 7 hours left.
Now the time is 10 PM and it still says 39%... The estimated time remaining says more than 51 days.
Time since last charged says 2 days 14 hours (which sounds accurate as I recall myself charging it about 2.5 days ago)
I have attached 3 screenshots of what I see. Check the time stamps. They were taken just few mins apart.
I’m assuming it’s a software bug, not a hardware issue…
Has anyone ever noticed any similar battery performance indicator issues? Just curious to know…
I’ve seen a lot of posts that says the battery would not last for few days. I have experienced the same myself. It used to drain very fast at the beginning. Couldn’t make it to last more than 24 hours after a “moderate” amount of usage . Yet noticed a gradual improvement with each use. Finally came to a point where I could manage to keep it for about 3 days or so in a row.
I do recall myself leaving the phone plugged into the charger for an extra hour or so… before unplugging. Since then I have made 26 calls, longest been 47 minutes. My emails are configured to be checked twice a day, have received about 35 text messages, accessed about 7 static web pages, taken a few pictures, one GPS usage for guidance (about 15 mins long) and used a few other apps. At home always connected to wi-fi. At times I see it been connected to 4G and the other times to 3G.
It almost looks like that estimate is just an extrapolation of the time since the last charge. Not reliable…
Would this “bug” kill my batter for good any sooner or would it degrade my battery life eventually?
Wonder if I should be worried… Few days ago the phone completely died. I thought the battery was dead, yet could not turn it on after charging it for 30 mins. Then read a few posts and tried a restart with just the volume lower button and the on/off button. Still wouldn’t turn on. Then I tried all three button (those 2 buttons and the camera button), which brought it back to life. All my custom installed apps remained the same.
Nokia N95 8GB was way reliable than this one.
Thax
tr
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Still 39% and now it says 54 days. I love my lumina 920. Now I love it more. I will post back when my battery needs a recharge.
Would u mind over charging ur battery for one or two hours and see if it gives similar results please?
tr

Lumia 710 battery life has changed

First of all I should say that i can't download anything from the market since August (or something like that), Zune's Team is trying to solve the problem since last week, but nothing worthy until now...
On the other hand since Monday but battery life has changed, and even with the full battery the prediction of time (displayed on settings menu) until it becomes empty is about 16 hours, nothing more. Before that I could see a prediction of more than 40 hours, and the phone used to last that long. Now, with the same applications, etc. it decreases drastically, should i send the phone for warranty?
Thanks.

Battery percentage on phones can't be right all time, you can always get more or less than what the system tells. If your Lumia 710's battery lasted 40 hrs then you are lucky or you haven't used it much, mine has never gone past 15 hrs with meticulous monitoring and usage. Please check for any recent apps you downloaded, uninstall it and check switching off Wi-fi and bluetooth if they are switched ON always.
Regarding your issue with Marketplace, is you phone time zone and country settings are correct?.
If a reply has solved your problem click Accept as solution button, doing it will help others know the solution. Thanks.

Lumia 900 - Battery Life

Ok, so I thought I would make this post as all I seem to see on the forums is complaints on battery life.
Battery life for me is amazing, BUT what I will say is the more I use it the less battery it uses, the more it sits on standby in the day the more it seems to use the battery.
So I have no complaints with battery because I use my phone non stop pretty much, so I want that clear to people who do not have a Lumia and is put of by the amount of people complaining saying it is poor.
So for the outsiders looking in and are worried, don't be. it is fine.
My phone typically goes through a 17 hour day and doesn't go below 50% and again that is non stop use

I agree, no issue with battery life...

Possible Internet Tethering/Battery Life Issue

When either Cellular Data is turned Off, or Airplane Mode is turned On, Internet Tethering (Settings>General>Network) appears to have some process that runs continually in the background (evident by continuously spinning wheel next to the option). The running process has a demonstratively negative impact on battery life (1/3 reduction in ~ 30 mins). The Apple Genius at my local Apple Store and I verified the issue on numerous iPhone 4s that were on display. Turning Cellular Data On and ensuring the phone is not in Airplane Mode stops the activity. But obviously that defeats the purpose of having those options.
So if you are experiencing poor battery life, this might be your issue.
Message was edited by: Pahsina

Could this be causing the unexplained usage and data transfer? I have been trying to find what is causing this. http://discussions.apple.com/thread.jspa?threadID=2603718&tstart=0

IPhone 5s battery life issues

hi guys
I feel like there is a problem with my iphone 5s. the battery life is really bad compared to my last iphone 5. I used to be able to charge my phone at the end of the day and would till have 40% or 50% left. now with this new iphone, it reaches down to 10% or simply dies by the time I get home at 6pm. I have turned off everything and i have searched google for all sorts of turn off tweaks so i could get the maximum battery life, but its still really awful. i listen to music for about 20 mins while on the underground train and later i might or might not get a text message or two and that is about it; the phone still yet loses all of its battery life while doing absolutely nothing. today i unplugged it from the charger and it suddenly went down to 99% right in front of my eyes.
i am going to the apple store on Tuesday to ask them if they could check it out. so my question is; have i missed something here or is everyone's phones are as such but not even one person is talking about it or they just don't care or embarrassed to talk about it, or what ????
btw my last iphone and this one are both 64GB black.
<Edited By Host>

I have had the 5s for a week now, and I am having the same issue. I have restored the phone three times now, twice through iCloud backup and once through iTunes. I have shut down all functions of the phone as suggested, which is stupid, that's the whole point of having the iPhone, and anytime I do anything with the phone, the battery drains 5 - 10%, and its quick things like, checking email, then quickly closing that app, sending a couple text messages, and listening to one voice mail and I am down to 50 %. Not sure if it is ios7 or a 5s issue, all I know is last week I had a iPhone 4 that I had everything turned on all the time, I checked email constantly, text frequently, made calls and used the Internet and easily went three days without concern. Now I'm scared to check the time for fear of draining battery on the new phone. I also had the battery completely drain twice now and then charged it to 100%, and that has not helped either. I was much better off with my iphone 4 that I could at least use, and wish I had not traded it in at time of purchase. No point in having a phone that I have to disable all functionality and try not to use unless I know I am going to be near a outlet. So disappointed!!!! First time I have ever been mad enough to make a comment on a forum!

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:

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 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 920 battery life issue

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