Phone is closing/opening apps on its own

[Storabananen]

Hi

As said, My phone is opening/closing apps and swiping the screen on its own..

It can open apps, close apps, swipe/change sites all on its own. 

And when it is in this state i cant even turn off the phone pressing the on/off button.

When it is in this state i cant controll the phone at all, i just have to wait until it stops wich usually takes a few minutes. 

Do you think this is caused by an app or is the phone malfunctioning ? 

I am using the app ''Master Cleaner'' do speed up the phone and it allso searches the apps for virus. No virus found. 

Thanks in advance ! 

[_alexdon_]

I suggest you remove the task killer,see how it goes.

[neilc]

When my phone started doing exactly as stated in the OP, I took it back to the shop who sent it off for repair. I was given a new phone and this too is starting to do it now. I had problems with my last phone, an Xperia S too. I doubt I'll be buying a Sony phone again.

[_alexdon_]

Are you sure that you did not install antivirus,task killers etc,apps that could interfere with the operating system?

[neilc]

Actually, I have Avg Anti Virus at the moment, with a task killer add on. I'll uninstall them and see how it goes. Thanks.

[_alexdon_]

Ok,report here.

[Storabananen]

Ok ill try to uninstall Master Cleaner. But arent Task killers a good thing ? As there are no in-built application to kill tasks with ? And same with Anti Virus ? 

[_alexdon_]

You can force close your apps from settings-apps-running.It is not recommended to use such apps because they can stop apps that you need.Also,antivirus is not needed if you know you are installing from trustful sources(eg google play).

[Storabananen]

Hi i uninstalled the Master Cleaner app but the problem persists.. its writes random letters on its own.. like if its pusing the screen on its own.. if i try to close an app it will just close it again and do all kinds of random stuff =(

[_alexdon_]

Do you have a screen protector?