No mobile data on 4.4.4

So i am in need of assistance. I have been running lollipop since it came out basically, but realized that my battery life and performance were suffering. So I decided to go back to kitkat. I flashed the 4.4.4 firmware then flashed the RUU to be safe. Then I reflashed TWRP and flashed nu sense six 4.4.4 v4.02. It is running great, the problem is mobile data is not working at all. I had this problem before. When I used to be on Kitkat certain roms the mobile data would never work. It just says "disconnected" and there is nothing i can do. When I upgraded to lollipop it fixed it so I forgot about it and moved on. But now that I am back to kitkat it matters again. Is there a way to fix this? Also a second unrelated question. My phone barely charges anymore. Any suggestions? I tried buying a new cable from walmart and it didn't charge it AT ALL. My current one is the original cable that came with it and it only charges if you fiddle with it a lot and get it at the exact right angle. When it comes undone in the middle of the night I am left with a dead phone in the morning.