touchscreen sensitivity

[Bob dole]

ok my hero's touchscreen isnt very sensitive, i will try to click somethign and it wont respond, like when i am dialing, it will work to good for some numbers, but other numbers refuse to work.

 

[Bob dole]

ok another question, does the battery being behind the lower section of the touchscreen while charging, which creates alot of heat from what i have noticed, affect the touchscreen? the top half of the screen that isnt above the battery works fine, but the lower half doesnt work at all while charging, when i first plugged in the phone to charge it worked abit to well,