I've got some old cords that have a micro-usb port on one end and a wall plug on the other. These are for charging mobile phones I used to have.

Highly unlikely. 11 years ago would be either USB mini-B or micro-B on the camera, not full size A. Full size A on the camera end would need to date back to the dawn of USB, which was a lot more ...

In the end, very few phones bothered with micro-USB 3.0. These days, the only opportunities to see one in the wild are older external hard drives and some USB hubs.