Sony Xperia Sp Touch problem

[pra]

Hi,

I am using Xperia SP from past 2 months. The mobile was awesome at initial stages , i had a very good touch experience and i need touch my screen exactly to open an App, just pointing a finger on the screen was sufficient to open an App   , but after 15 days of usage ,

I am getting irritated while charging using USB cable using DELL PC, The touch doesnt work, when i try to unlock the phone using security pattern , the touch fails, though it doesnt sense anything the patterns are getting displayed. I have to bang on it to open any App.

I am not able hear anything when i m on call.

Phone hangs most of the time.

While playing games , touch doesnt work .

While using internet , webpages hangs , and suddenly wifi gets turned ON , the screen keeps toggling .

Its very disappointing

Is there any fix for all these issues  , I am currently using 12.0.a.1.257 build.

[Uliwooly]

Repair your phone with SUS or PCC

Update Service (SUS)

http://www.sonymobile.com/gb/tools/update-service/

http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

Don't forget the Kudos 

[Uliwooly]

If that doesn't work then take it to a Sony repair center

http://www.sonymobile.com/global-en/support/contact-us/

Don't forget to give Kudos

[pra]

Hi,

I have updated the phone with newer build , still m facing the same problem. I took it Sony service center in Bangalore , Accel Frontline, Kormangala 8th Block. That person updated with new firmware , still the glove mode is not working , cursor ring doesnt appear, While charging using USB , the patterns doesnt work, and UI goes out of control.

If i tell that person this problem , he is said I dont know anything about this phone. What scrap service engineers Sony has got?

He is suggesting me to take it to another Sony service center in Indiranagar . Its really waste of my time and money

[dm84]

below is a link that might ggive you an insight to the problem you think you might have 

http://sindhu.ece.iisc.ernet.in/systemslab/documents/cellphone_chargers.pdf