It's anyone's guess what is broken. While many don't like to hear this, it's time to see if your phone has any warranty on drops. Since no one repairs these, get an price on an exchange.
I dropped my N4 from quire a short height onto the leg of a metal chair. My phone wasn't charging beyond 70%. I went to remove my battery to see if taking it in and out would fix it and I noticed to my horror the housing around the charging port was dented and bent in, albeit I can still put my charger in there and still charges.
I replaced the battery with a Samsung branded one from a local repair shop and they look identical but it really doesn't hold a charge very well. I turn my phone off at night with 100% charge. Within 2 minuets of using it it had gone down to 95%. Its now 67% and I haven't even done anything on it apart from a minuet on Instagram and on the Internet for 10 minuets. Normally it would be at least 90% if that.
What is the problem, the housing which is damaging the port or the battery? I'm taking it to a service centre but do you think it will be repairable? Its only about a month and a bit old and was a lot of money!
Any help will be much appreciated