Samsung Galaxy S5 power socket key

My girlfriend had trouble opening the door to the power socket on her Galaxy S5, since it comes standard with a door for waterproofing. Even with with fingernails it can be difficult to pop open at times so I decided to design a tool she could keep on her nightstand to open it to charge before bed. Then I got the idea to make the tool clip to the end of the USB 3.0 charger for the Galaxy S3 so she would never lose it. It was just a simple square shape that clipped over the end that plugs into th