The best way to get to the home screen during a phone call on a LG phone (exalt & classic):
First download this and install it on your phone. HOME4FLIP.apk (1.3 MB)
Then save this contact.
During a call press add call > contacts then find the contact (.homescreen, it will be the first contact). Open the contact and press go.
You should now be on the home screen! Congradulations!