My iPhone 4s is not charging when plugged in?

It's never done this before. I've already unplugged it and plugged it back in a bunch of times but it's not charging! Nothing is blocking the way. I've already turned my iPhone 4s on and off and it's not working…

Some friends of mine had a discussion about this issue on facebook some time ago, and it turned out the charging part of the iPhone had been wet and damaged. Maybe something similar have happened to yours.

What are you plugging it into? Sometimes if the phone doesn't deem the power source adequate, it'll say "Not Charging", so try plugging it into something else, or use a new charger.

Try the neighbor's charger just to be sure.