Share your experience!
hi friends,
a few days ago while playing temple run i noticed that it was lagging heavily. i had already played it a while ago without any problems. i ran a quadrant test followed by antutu test. quadrant gave me score less than google nexus (old one) & antutu gave ~3500 so i was shell shocked coz other xperia u users had ~5000. the major drawback was processor. so i checked the background apps using astro & was amazed to see most of the apps running in background. i thought that maybe this was because of my friends who use my phone ocassionaly & do not exit the app. so i installed the "advanced task killer" app from play store, disabled the automatic thing & enabled only the maual killing. so after running the app & running quadrant again, i could beat even optimus 2x! so i was happy like nobody on this earth. then after some days i noticed that even after proper exiting some apps they are not killed. please note that most of these are games & do not require network nor was my network on. i saw that the apps werent killed even after 10 mins. is this a problem due to sony developers or app developers? let me point 1 more thing....
i may sound ridiculous but after installing this app i have noticed a considerable improvement in the quality of speakers & performance of phone. i suggest others to try this as well.
NOTE FOR SONY DEVELOPERS:
please provide an app by which we can see a graph of the performance (utilisation) of processor vs time just like in windows task manager in windows 7.
Hello xperiaU
Wile reading your post I was going to Suggest you use "advanced Task killer" but I see you discovered on your own.
It 's a great little app no? Now, there are certain apps that are tied in to the system and those don't go away even when you manually kill them. A suggestion would be to deactivate auto Sync under Accounts and settings and to turn off any location service.
Doing this will terminate many system apps that do not need to be running all the time.
Hope this helps
Francis
hello francis,
thank you for replying. 
yes the "advanced task killer" app is amasing!
i have noticed that google maps keeps running but i dont remember giving any app permission for location services, so why does it keep running?
i always keep auto sync off & manually sync when i turn the data connection on.
can you please forward my request regarding:
please provide an app by which we can see a graph of the performance (utilisation) of processor vs time just like in windows task manager in windows 7.
to sony developers?
the reason some apps run on the background is because other apps rely on this, or have extra permisions.
Taskillers are a bad idea.
they do stop apps BUT as you'd noticed they are open again few minutes later, and by doing so, this apps drain more battery restarting than letting them run on the background. Also taskillers make Android unstable, and create problems with other apps and/or connectivity issues, just like antivirus.
Battery and Ram apps are similar, those apps (taskillers, antivirus, battery, ram apps) are not good in the long run
http://www.engadget.com/2012/06/18/android-wakelock-api-bugs/
Android apps that use power control APIs are often 'battery killers,' oh the irony
http://www.tgdaily.com/mobility-features/64061-api-glitch-may-explain-fast-draining-phone-batteries
http://www.purdue.edu/newsroom/research/2012/120613HuSmart
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unrelated topic, if you have some time please check this thread
ya you are right regarding services that cannot be stopped will drain more battery if killed.
but some apps like temple run, dinosaur war, ninjump, paper toss, air control, etc keep on running even after proper exiting (i checked in the manage applications whether the "force stop" was available or not to see whether the app is running or not). they are not using internet since my data connection is off. then still why cant they be killed by timescape ? after killing by advanced task killer app they dont become live again untill i start the app.
so my point is that why timescape cannot kill apps properly?
i dont have any problems with the services like facebook, gmail, etc which cannot be killed....
can somebody from sony please reply to my querries mentioned in reply to uliwooly?
Yes, sure.
But I'm not sure what you're meaning. reading your reply to uli it seems that you're looking for an option to use Timescape to kill other app's.
"then still why cant they be killed by timescape ? after killing by advanced task killer app they dont become live again untill i start the app.
so my point is that why timescape cannot kill apps properly?"
This is not possible, since Timescape is no Taskmanager app.
thank you johan for replying!
what i meant is that i have to kill apps by using advanced task killer app even after exiting properly. why arent they killed automatically when i exit the app properly? this doesnt happen to all apps but for some apps only. & ofcourse i am not talking about services like facebook which cannot be killed.
i hope you could understand what i am saying.
It depends on how the app is encoded to work. In this case Timescape is meant to be running in the background and does therefore not close when exiting the app.
just wait for ICS so you can disable this
Don't forget to mark the Correct Answers & Helpful Answers
unrelated topic, if you have some time please check this thread