My one big gripe about the Galaxy S5: the Micro-B USB 3.0 / charging cover that is now always loose. At first it wasn't very hard to put on and stay on, but slowly took longer and longer to stay on and now is loose and hangs out. From what I'm reading this is a design flaw on Samsung part. So, since I'm not around water much and I'm not one who using the phone in the bathroom, and the fact that I've never gotten a cell phone wet in 12 years, I don't really need the waterproof feature, so I took the charging cover off. With the battery cover off, you will see 2 Phillips screws on the bottom. the screw on the left is the access port to replace the port cover. You will have to pull the cover a bit as there is a lip that keeps it from sliding out easily... I imagine so you don't lose it. I am amazed that SAMSUNG knew that thing would break a lot and made this a very simple repair.