Alternative way to press send?

Hi guys. Basically there's a strip down the right hand side of the screen on my nexus 4 which doesn't respond to touch. This is exactly where my send button is on text, whatsapp etc! This is really annoying and was wondering if anyone knew of a way to move where I press to send or if I can like set it so when I press power and vol. up button it sends the message?
Thanks!

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