Default LG G2 Touchscreen typing wrong things

I replaced the display-module from my LG G2 and tunt it on.
The problem ist that the touchscreen is detecting everything but not my input.
I type in "8" but the "9 7" and ok buttons are pressed by the smartphone.
If i start without the sim card i can swipe down the statusbar , but its very lagi.

I dont have any idea whats wrong with it and dont know what to do.

Can anyone help me with my problem please.
and sorry for my bad english