This happened to me a month ago, but it was the top corner that took the hit. My left side of the screen was not responding and I alsomhad a pin that I couldnt key in. Inhale since there is hope.
1. Do you have carrier insurance? Be prepared to pay a $200 deductible to have it replaced (and you will probably be sent a refurbished phone).
Alternative- hopefully you have a ubreakifix.com store or similar nearby that will replace the screen and digitizer for around $150 in a few days.
Alternative 2 - order the screen online for around $95 and replace it yourself. There is a really detailed youtube video showing all steps. However it sounds delicate and not worth risking breaking a pin or ribbon cable. Check it out.
As you decide what to do, you may want to access files on your phone. Go to newegg or wherever and buy a usb OTG cable that allows you to connect a mouse to your phone, and you can navigate it like a pc; it is super cool.
Sent from my SM-T310 using xda app-developers app