Battery usage is dependent on same issues irrespective of WHATEVER OS VERSION you are using. Extended standby mode sure helps a bit, but if you are using live wallpaper, 3g, lots of gaming, media apps etc, it will not be able to save your battery. If you are asleep and the battery drains 30%, it means something is wrong with something else, not the version, like the points mentioned above.
DO NOT THINK THAT ICS OR JB WILL ALLOW YOU TO HAVE A DREAM BATTERY OR ANYTHING.
My point for the links is READ about the things to be done for improving battery rather than making new threads about everything.
As about the links:
the first link was for you to find this post: http://talk.sonymobile.com/message/314351#314351
the second link is just a search link with keyword 'battery'
the third link has some great posts:
Arnab wrote:
The battery drain is most likely due to the numerous apps and live wallpapers you have.
Please have a look here:
http://talk.sonymobile.com/message/154243#154243
Also uninstall unrequired apps and apps that do not let the phone sleep. Try not to use a live wallpaper. Also take in note the brightness of the display.
AND
bigf28 wrote:
First look at the topic given by Arnab
Other things you can do:
- keep wi-fi on during sleep only when plugged in or never (you can find that option under Settings > Wi-Fi > Advanced (press menu key) )
- Use Extended Standbay Mode (you can find that option under Settings > Power management)
- use lighter versions of stock launcher and album
If you root your phone:
- Make a battery calibration (you can use a free application from the Google Play like Battery Calibration: https://play.google.com/store/apps/details?id=com.nema.batterycalibration )
- uninstall or freez bloatware or some appplications that runs in backgroundlike facebook, maps, office suite, etc.). you can use Titanium Backup:https://play.google.com/store/apps/details?id=com.keramidas.TitaniumBackup and/or App Quarantine ROOT/FREEZE: https://play.google.com/store/apps/details?id=com.ramdroid.appquarantine (with App Quarantine you can add widgets of freez apps for quick access)
- use SetCPU to set CPU frequency to minimum when screen off (or whatever you're needs are)
- use some application to remove ads in the browser and other fre apps (app like AdFree Android: https://play.google.com/store/apps/details?id=com.bigtincan.android.adfree) Those adds from free games or other apps are a big consumer for battery
After all that my battery lasts about 1 - 1,5 day with medium-heavy usage and wi-fi always on
the fourth link is about 'xperia u battery'
USE THE SEARCH BUTTON OR YOU WILL FIND YOURSELF WITH RESTRICTED ACCESS HERE. DO NOT SPAM WITH TOPICS WHICH HAVE SO MANY THREADS.
