Dead iPhone with badly dented B-LH corner. Why isn't it even charging?

Good evening, a friend of mine gave me his silver 32 GB iPhone 6 that fell from a very high place and hit the bottom left corner very hard, so hard that the headphone jack bent on itself due to the corner deforming, and after that it landed on its screen which exploded into pieces. The LCD panel behind the glass came off from the rest of the screen literally. The phone itself isn’t bent at all and apart from the screen and the corner I don’t see any damage, on the inside everything looks OK. I’ve tried connecting it to the wall charger for the night but still no sign of life, I’ve attempted to connect it to iTunes, tried to hard reset it, and still no sign of life at all, It’s just like a rock at the moment. The charger and the battery itself do not get warm at all, which makes me think that the charging dock might be dead. What do you think? What could be the issue? Could it be worth fixing it? I’m already experienced on Android phones and screen replacement, but I’ve never got my hands on an iPhone yet. Thanks :)