My phone automatically turns off when I turn it upside down or left

So this iPhone was a pass down from my sister she gave it to me with 2 faults with it: earphone jack doesn't let the earphone go in all the way but still works, the inside I can feel it shaking.

One day I went to play in the park and I dropped my phone (this was my first time dropping this phone) and then I had the problem that whenever I turn it upside down or left it turns off so fast forward a few weeks, I dropped it again this time it wasn't turning on so I backed the phone up from iTunes and it worked

Fast forward 2 more weeks I dropped it again and now it won't turn on.

It'll only show the apple logo loop were it turns off and shows only the apple logo. I tried backing up my Phone on my laptop but it doesn't connect in any way and I tried the trick when you hold the home button