Iphone 6s is recognized by computer after restore but screen won't turn on and it doesn't vibrate with the mute switch or when plugged in.

The phone turned off because the battery died and after being charged up with my computer I hear the usual sound to alert me that something is connected so I go to check my phone and I got nothing the screen was completely black. I did some research and read that it could be the software so I connect it to iTunes after putting it in DFU mode and I restored the device. My computer then again recognized it. I checked my phone but nothing was there the screen was still black. I plugged it in waiting for it to vibrate nothing. Since I work with computers and phones I took my phone apart (The screen). And put it back on to see if it was just the screen and I'm still getting nothing. What do I do? I live way too far from an apple store so that won't help