Broken Home Button on replacing screen.

Hi there.

I've today replaced my iPhone 5 screen and the home button has stopped functioning.

The new screen I replaced my screen with was a complete bundle, so in theory I only needed to replace the screen, the home button, camera, speaker and all were included in the pre-bought screen.

However, when I booted the phone after everything went successfully (I thought so anyway), the home button did not work.

To troubleshoot this, I reconnected the old screen (including home button) and now this home button did not work either, so this implies an issue with the other 'half' of the phone.

I'm not particularly tech savvy, but I could not find this exact question answered anywhere.

Thanks for any help you can offer me.