No connection to pc, but charges properly from the wall adapter.

Okay, so i have an iPhone 6s 64GB, and it doesn’t want to sync with my pc. Both the PC and phone ignore each other, but the phone is charging slowly, despite the fact that it’s actually not showing that it is. The battery precentage just goes up. Tried 3 USB cables, including one original cable. All 3 work perfectly with another iPhone. 3 PCs, same deal, all 3 work with iPhones. Tried cleaning the lightning port on my device, tried rebooting multiple times, even tried DFU mode which still doesn’t get detected, It charges from the wall PERFECTLY. It charges fast, doesn’t heat up or burn, shows proper charging indication, but when it gets connected to pc everything breaks. If i turn it off, it will turn on if i connect a USB cable that’s connected to my pc, but it doesn’t get detected. Tried different port types: USB 1.1, USB 2.0, USB 3.0, USB 3.1->USB adapter. What can it be. The iPhone was bought used. All PC’s have latest iTunes. The iPhone was not repaired besides the screen replacement after a drop, the drop was not hard at all, barely left any damage to the body, only screen cracked.