can't use touchscreen--need to be able to answer/end calls?

[caimcd]

My touchscreen is cracked on my phone and I can no longer use it. I've figured out how to do a lot using the botto 4 buttons and the trackpad but I've had little luck answering calls or hanging them up. Sometimes I can use the trackpad to end a call but it takes a while and usually I just end up turning my phone on and off

Are there ANY solutions to how to work around this? keyboard shortcuts, the trackpad, apps, anything??