I as well have had these similar issues. Wild web scrolling, typing a text or email and looking down to WHOA WTF? and wondering what language im typing in that would have 4 consanants or vowels in a row, unresponsive and or super sensitive screen, random buttons being pressed, draw screen in memo freaking out with squiggly incompleted lines and corners, etc... And I read all the neigh sayers post... Clean the screen...take your cover off.... Screen protector has bubbles in it... Blah blah blah. Well did all that, no dice. Ordered two sprint variants, mine had screen issue, my wifes didnt. Yay for me. Tried new roms, took kit kat update, cleaned the screen again(hahaha) still no difference. Read about all the issues week after week, still no dice. Bought phones off ebay, they sold out so no swapping, even got low down and tried to con my wife out of hers. A text or email of this size wouldve taken well over an hour to type when the same could be done on average in 10 mins. All the mistakes and double and triple typed letters and corrections....gee whiz! I ordered a complete screen digitizer kit and put it in myself, problem solved. Typed this whole reply with a dirty screen in a dirty otterbox with dirty fingers and no problems. Timer still running, took 15 mins to type this and think about what to type and correct MY BAD TYPING, not my bad typing and the phones...(hahahaha) try the chepaest one on ebay sold in usa screen digitizer combo, bout 90 bucks. WELL WORTH IT