Arvindmundhe

Hey guys, I managed to fall while out skateboarding with my N5 in my pocket. The screen cracked but continued to work. One day coming out of my class I tried to check my voicemail. That is when I noticed my earpiece didn't work. So I had to use speaker phone. Fast forward a week later, my parents complain the call quality from my phone is crap now. And most recently, my headphone jack stopped working properly, there is no low frequencies and is barely audible. What can the problem be and is it fixable? I have no warranty on my phone. I also believe that my NFC stopped working because I can't get it to work between my brother's phone and mine, but I can't really narrow it down if its his N5 or mine that isn't working.