Hi, and thank You for the reply.....
The only apps by third party that I had were file manager and a radio fm app.....I never used QuickTweak.
What I've done ,in sequence,is:
1)I reset the phone.....and it works fine....then ,with my BackUp, I reinstalled everything....
Than the problems started again ( impossible to write sms, because the phone digit itself; or,the phone always opens the apps that are at the bottom of the screen; or it swipe the screen left to the right and right to the left...).
2)I tried to take off all the apps,one by one....but with no good results...
3)i flashed the phone with zeroize ( "flasher -f -F main.bin --erase-user-data=secure"),it reinstall the roots.....than I reboot the phone....and I still have the problem.
Maybe the bottom part of the touch screen sensor is broken? I really don't know....
Maybe I've done a wrong command for the zeroize?