N8 vs 5800 XM battery life

Hey guys,
I currently have a Nokia 5800 XM on which I can get around 2 days of battery usage (sometimes slightly more).
My usage profile on the avareage day consists of
- 50m music player
- 20 mins web browsing
- Occasionally unlocking the screen to check the time, etc
- Bluetooth is off
- GPRS is off, only used when connecting to the net
- GSM is on (obviously)
- Wireless is off, but I turn it on on request when checking the web at home
I think it's a decent battery life, altough I don't use the phone very intensively.
I wonder how would the N8 perform in similar circumstances ?

From my experience I am getting about the same time between charges as my 5800 with generally similar use but I am using the N8 a lot more for browsing as I often use the N8 now for web browsing instead of firing up my laptop.
If I shut eveything down except for the phone I am getting better battery life than the 5800.
The danger is that with the N8 being so much better you use it more and so the battery could last less time but that could be through more use rather than it being a problem with the battery life.
Just watch out for the "always connected wifi" bug... if you find that your N8 keeps reconnecting to wifi, even with all the wifi scanning and data stuff turned off, then delete your wifi access point and re-add it as that seems to fix it.

Similar Messages

Nokia 5800 VERY low battery life! Please help!

I bought a Nokia 5800 last week off a friend.From day one it has had problems.
I've managed to somehow fix those but now the biggest problem i have is that the battery life is VERY low. Y'day i charged the phone overnight and today i was using Whatsapp(for abour 2 hrs) and listened one song and now(it's noon) the battery is EMPTY!.
I ve heard that this phone has really good battery life but i only used the ohone for about 4-5 hrs and the battery is already empty!
What do i do? please help me!
Does it have something to do with lose connection?

I just bought a new battery on Saturday

N8 frustration - WLAN/FM radio/battery life

Boy, were my hopes ever dashed?
Great to look at, great to hold in one's hand, nice to swoosh between homescreens, photo-taking a treat.......I could go on; not much, but I could go on.
How frustrating is this phone?
Anytime I plug in the supplied headphones to listen to the FM radio, the app freezes and won't close down. It finds all the stations, but won't let me pick one or assign an ID to any of them.
Battery life seems much less reliable than that of my previous 5800, but I'm willing to make an exception with regard to the fact I'm regularly on the screen trying to work out how to use the thing! IF I ever manage to get to grips with it, or if it ever gets the fix that it needs, this issue may well be forgotten.
The 'messaging' icon was lost during an organisation of the menu screen, and cannot be found or replaced, even after a reset.
The most annoying thing, however, is the internet connectivity - or lack of! So far I've had trouble with downloading updates to allow facebook and twitter to work - what's with apps for 'social networks' AND 'communities'? - accessing OVI stores requires regularly re-signing in, mailbox settings are proving problematic amongst other things, and connecting to my WLAN at home....? Nae chance.
I have a BT HomeHub (one of the black numbers) which allowed a laptop and a Wii, no problem. This phone? Found it, took the key, will connect, but any attempt at web browsing is met with a window stating 'Invalid server name'. After a long call with BT this morning, the HomeHub was reset, and this seemed to clear everything and allow access. Come teatime, however, and we're back to the 'invalid server name' response. What is THAT all about? How can we overcome this?
As a point to note, I tried connecting to my sister's Virgin Media hub at her house a couple of days before - easy! No problem whatsoever. A chap in the Vodafone shop recognised this from the anecdotal evidence of other customers and said perhaps a WPA/WEP diecrepancy may be the cause. It is at this stage that I become disconnected from any sense of understanding.
Can anyone enlighten me, please? All I want is to get this working and get on with my life. A quick scan of other discussion topic headings suggests to me that this may be a winter of discontent for many N8 owners. Are there any knowledgable folk out there with some practical suggestions/solutions?
It's late. I'm tired. Good night.
Best regards
MT

@2late2avoidN8
I also have had problems with the wlan connection on my N8. The phone would connect to my wlan no probs. But when trying to connect to the internet it would say "failed. Access denied".
Then tried to connect to the internet using my network providers access point and got the message "Invalid server". Out of frustration I rang the Nokia Australia call centre (located in the Phillipines) and the woman I spoke to there told me to perform the following steps.
1 Switch the phone off for about 30 seconds.
2 Switch it back on and wait untilthe home screen appears.
3 On the dialler type *#7780#
4 Wait for the phone to restart.
Did all that and guess what. It solved my connection problems.

Which one of these phones has the best battery lif...

I am going to get a Nokia phone from "O2" store tomorrow. I will either get the Nokia 2700, Nokia 5130 or the Nokia 3120.
The dying Nokia that I am replacing I have had since 2005 and the battery usually lasted over a week between charges. The phone was an inexpensive one, €60 or something. I expect this kind of performance in my new phone.
Which of these phones have the best battery life?

I would vote for 5130 XpressMusic. 5130 and 2700 are on par in terms of battery life. Feature-wise, the former is a tad better. But, it's all about your preference, and the cost.
Cheers,
DeepestBlue
5800 XpressMusic (Rock Stable) | N73 Music Edition (Never Say Die) | 1108 (Old and faithful)
If you find any post useful, click on the Green "Kudos" Button on the left to say Thank You...

Portege R500-126 battery life

I bought the Portege R500-126 brand new @2 weeks ago and with SDD and no DVD/CD, I was expecting, as advertised, up to *8 hours* of battery life
To test, I fully charged the battery that was delivered with the machine, selected 'Power Saver' power plan, pulled the charger cable out and leaved alone for 3 hours later, with no use of laptop whatoever, the battery was almost discharged
I noticed on the Toshiba sales site that they sell a *Li-ION 6 CELL 5800 MAH* battery for 95 + vat, is this the same battery thats shipped with the R500-126 and is anyone else having this issue?

Hi
I found this Toshiba product website about Portg R500-126:
http://uk.computers.toshiba-europe.com/cgi-bin/ToshibaCSG/jsp/productPage.do?PRODUCT_ID=145824
But unfortunately there is nothing about the battery life time.
There is only this;
Maximum life: currently no official Windows Vista battery benchmark result available
Fact is that the Vista needs more battery power as other OS (i.e. XP) Vista eats notebook resources and from my knowledge it needs two times more battery power as XP.
Furthermore the run time depends on hardware configuration. Stronger devices waste more battery power as the devices with a lower performance.
However, back to you question;
As far as I know the R500 was equipped with the 6cell PA3612U-1BAS/BRS battery pack.
Cheers

Nokia 5800 Xpressmusic Battery Now lasts only arou...

Hi,
My 5800 used to retain battery power for 3-4 days of normal usage until my upgrade to the latest firmware. Firstly the FOTA failed. After restart it popped a "System Error" after"installing..." The Music Player also screwed and used to continously show "Fixing Corrupted Library files..(something like that)". Then i used OVI suite to transfer music and it temporarily fixed the issue.
But then i used the USB connection with Nokia Software Updater and reinstalled the firmware. all the problems were fixed. But i observed that the Battery life has now reduced to just about 18 hours!! I am not sure if its indeed the firmware but most likely so. I also did a soft reset without realising that i would lose all the smses and contact data Anway, main issue is batterypower consumption. The Nokia Energy Profiler shows a current consumption of about 170mA. It was same even before the soft reset.
Can anyone help?

First I would do as chanchan05 suggests. Some application is using power and draining the battery.
Then I would do the usual ''power saving'' settings: packet data=when needed, 3G to GSM (if 3G not needed) ...etc.
Then I would do the battery calibration:
1.Switch off the phone
2.Fully charge it
3.Unpug the charger
4.Remove the battery from the phone
5.Wait 10 minutes
6.Insert the battery back in the phone (don't switch the phone on)
7.Plug in the charger and charge again till the battery meter shows full
Switch on the phone and start Nokia Energy Profiler; turn off the screen nad wait 10 minutes. Then check mA graph (cut out the spikes from the start and from the and of the measurement when the screen was on). If the measurement shows more then ~15mA there is something wrong. My Nokia 5230 measures 6 or 7mA in standby.
Regards

Nokia 5800 Problems(battery + Reliacne GSM)

I have bought New Nokia 5800 XpressMusic on 15th November 2009(1month ago)
***But I think I am getting less battery life as compared to company assurance.
company says that battery lasts after
Talktime: 8.8Hours OR
Standby: 406Hours OR
Video Calling: 3Hours OR
Music Playback: 35 Hours OR
Video Playback: 5Hours(Mpeg4) OR 3Hours(nHD)
But my usage are as follows(PER DAY, 24hours)(2G):
at least 100 to max 170 Text messages,
at most 1:15 Hours music playback,
5 to 6 image capture,
At most 1 call (hardly one!)
No GPS
And network mode is selected as GSM because it causes battery last longer.
then also if i charge battery COMPLETELY ( until it says charging complete/battery full) at 6AM, then at 6AM on the next day only 2 or sometimes 3 bars are shown on battery indicator (on default theme)
IS THIS OKAY?
*** My second problem.
I have downloaded Guitar, Drum and othe music apps and SPB Brain Evolution from Nokia.
And I am using Reliance GSM sim card(in INDIA ONLY).
but when i open them Error comes out:This Application cannot be started on device other then Nokia 5800/India.
And application closes.(brain evolution)
and ,usic applications give error as this app can only be run on india telco simcard or something like that.
What should i do?
Please Help.
яєgαя∂ѕ,
gιяιѕн©®

The stated times for battery life by the company is at max efficiency modes, and can never be reached in real life. For example, to reach around 30hours of music playback, you need to set it to the lowest volume, lowest screen display brightness, offline mode, display off at 5 secs, etc...Meaning that you're basically turning everything off except for music player. Oh yeah, to make sure the battery is full, countdown only starts once its already playing and you unplug it from the charger. Basically you wont do that in real life. The 5800's actual real life battery performance is about one and a half days of moderate usage.
The phone lasts for me from about 6am to 12nn the next day (turns off), with about 100texts per day, 3 or 5 calls, random music playback (hardly an hour a day), 2 hours of internet. I have my 3G on at times, but I have reduced haptic feedback to lowest levels (this eats a lot of battery), touch tones are disabled, display brightness at about 3/4.
If you find my post helpful please click the green star on the left under the avatar. Thanks.

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

I recently just updated my iPhone 4s to 5.0.1 and I am losing battery life at a faster rate. How do I help my battery life or can I go back to the old system?

This is my first iPhone I am having problems with my battery life. I recently updated to the new operating system for the iPhone 4S. I am losing battery life at a quick rate is there anything that I can do.

You can search the forum and read the many helpful posts with suggestions on how to improve your battery life.

My new ipod touch's Battery life is extremely short

I bought 10 days ago the latest iPod touch and it is getting very poor battery life.
Even without using multitasking and with having notifications turned off, it is running from full to empty in less than two hours.
What is it that I have to do between all the things people recomend?
- Reset Network Settings
- set it up as a new device with no apps
- Powering off every night
- Shutting down Wi-fi all the time
- turning off push mail, notifications, etc
- Turning off "Location Services"
I've tried doing the lasts 4 things and nothing improved..
Or is it just because it's new and in the future it'll work longer?
Thanks you all for your useful answers!

You might check out this thread for possible help.
http://discussions.apple.com/thread.jspa?threadID=2474499&tstart=90

How can you get OS Lion back if you already downloaded Mavericks? I CANNOT live with the battery life of 2 hours!! HELP

How can you get OS Lion back if you already downloaded Mavericks? I CANNOT live with the battery life of 2 hours!! HELP

Kappy wrote:
Don't downgrade OS X without first erasing the drive. You cannot restore a Time Machine backup of Lion directly on top of a later version of OS X such as Mountain Lion or Mavericks.
When you "Restore from a Time Machine Backup.", the drive will be erased for you, but yes, won't hurt to:
Boot into Recovery (hold ⌘R on boot)
Utility->Disk Utility->Erase Macintosh HD, then Repair Macintosh HD
Quit Disk Utility
Then Select: Restore from a Time Machine Backup.

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

How do I maximise battery life on iphone 5s

I have just got an iphone 5s and the battery life is terrible. With my 4s I used to double click the home button then I could close down each app fully as they showed up in a row and I could press an x. I cant seem to do this with the 5s. Please help, its lasted 9 hrs since charging and I ve been asleep for most of them!!! I tried Apple support chat but after over 30 mins I didnt get a reply.

To shut down apps double-click the home button then swipe the app screen shot upwards. However, very few apps actually run in the background.
The list of apps you see when double-clicking the home button is only a list of recently used apps, it is NOT a list of all running apps.
Battery life will improve over the next days and weeks as the battery is used.

After iOS 8 update wifi is so slow and battery life is much worse

After installing iOS8 on my 5s the wifi and 3G has slowed remarkably down. The facebook app now doesn't refresh unless I turn the phone off and on again and safari takes an age to load it's pages. Also the battery life is even worse than before. I used the maps yesterday for 1.5 hours for a trip and it took me from full battery down to 10% in that time. This is really irritating me now, will it be fixed?

Like you I have a 4S running on iOS 8, and since the upgrade to 8 my battery drains like crazy. I'm not experiencing the wifi issues that some of the other posters are having, but the rapid battery drain seems to be a common issue. I keep hoping Apple will address this with their updates for iOS 8, but it always seems to be overlooked.

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.
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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!

N8 vs 5800 XM battery life

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