Share your experience!
I have xperia j but the touch screen hang many times a day, i cant pick my calls or i am unable to draw a pattens or swipe the screen. I use my phone without memory card and I also upgrade my phone software, but the problem is the same...very bad experience with Sony..
How to sideload apps
unkown sourcess MUST be selected
1st Method
download OI File Manager (or any other file manager)
download the app on your computer, transfer it to your SD card, use OI file manager to find it -> tap on it -> install it
2nd method
download the apk on your computer, send it to yourself through email, make sure you send it to your Gmail
now on your phone
go to settings -> applications -> check unknown sources
wait for the email, once you get the email, open it, and instead of downloading the attachment it will allow you to install it, voila, done
3rd Method
go to box.com and upload the apks from any computer
install the App on your phone -> open BOX -> tap on the app -> install it
4th Method
download the app, transfer it to your SD card
Download Apk Manager
open "Apk Manager" and voila select the apps that you wan't to install
If I understand you correctly, do as the picture
http://android-elf.ru/wp-content/uploads/2012/08/Unkown-Sources-650x382.png
indeed
Thanks Super user,
I hve used the 4th option and installed the file calibrate.apk(using apk.manager). This saw an immediate increase of perfomance as far as the touch is concern. This has helped for now. hope this touch problem will not come back again.
Thanks a lot. is it ok that i uncheck the option of "app from unknown source".
Thanks again 
Thanks it works 
please let me know the application that works?
I guess it works and I just did the calibration couple of hours back...... so far no prob.......
works fine with calibration software...
do you have any idea where can we get the software?only in xperia support center?
What shall I do if I cannot update 11.0.A.7.5. It is downloaded on Pc but there is an error to download on my phone, tryed several Pcs. Sony as well. Thx
i think if u have the same problem like i have, then i am sure that u still have this problem. sony dont have the solution for this fault. sony seems a big failure....