Xperia SP lags while in settings

[PanosGR89]

Hello guys,
After the latest update the phone has become very fast and smooth, as it was with 4.1.2. However a bug still occurs (it started with the first 4.3 update) some times. When I go to settings and clear cache or ram management my phone starts lagging out of nowhere. The weird thing is that it doesn't freeze, it works and I can scroll and move around the menu or whatever. However, nothing actually works, for example I try to open viber but it doesn't show messages etc. I have to hard reset my phone as I can't even turn it off pressing the power button. It's getting really frustrating. I installed the latest software with clean install using SUS and performed factory resets before and after updating.

[PanosGR89]

I booted my phone to safe mode for several hours, used it as always but the problem didn't occur. What app might lag the phone when I am in settings >apps and for what reason? That's very weird.

[_alexdon_]

Any task killers,battery savers you have installed?

[PanosGR89]

Nope.

[_alexdon_]

Are you willing to try a software repair?

[him]

Looks like some 3rd party app is causing this try to pinpoint the app then Uninstall.

[PanosGR89]

What kind of app might cause this problem when I am in apps - settings? It doesn't make any sense, as u don't have this problem at any other point. Yes Alex I am willing to do a software repair once again, I would like to ask something first. What if I perform factory reset, then install with PC Companion (I used SUS the other 2 times) and then factory reset again? Do you think this could be better or just try and see what happens? Thanks for your replies guys.

[PanosGR89]

*as I don't have
The other option would be to let it be as it is and not go to settings this often, only once in 2-3 days to clear cache.

[_alexdon_]

You should first reinstall with PCC or SUS,after that do a factory settings reset.

[ragesh]

I'm facing this same problem.

[_alexdon_]

ragesh,did you try a repair?