hey friends, i saw another iphone with docks icons isnt working..touch screen works fine, when i slide to unlock, but when i tap any icon, phone or mail it doesent work, even lower section of key board alos isnt working.. any ideas for that..anyone had the same problem???

It's a dead strip on your touch screen and can generally only be fixed by replacing the screen. You can temporarily fix it usually by modifying touch settings (see my sig).