ZTE LEVER charging port broken? Does new one have to be soldered on?

I've had to bend and play with the cord to get my zte lever to charge. Now it is getting harder to do, charging extremely slow, and not holding charge for very long. I ordered a new battery and charging port but need to know if it has to be soldered on. I have no way of doing that part. Please help. Can anyone direct me to a how to manual? I have never worked on this phone before.

Also, I have tried other cords and it has the same results. I also do not have a warranty anymore. I am trying my best to get it fixed myself.