So I bought this USB wall charger/adapter (it has the green dot) off of ebay.

It charges fine, but when I want to play and charge, it's basically a no-no.

Whenever I touch one part of the screen, another part is instead activated.

For example, I try to open up the facebook app, but instead it goes to my doodle jump app.
The touch is all messed up.

Anybody have an idea why? Unless of course I basically need to buy a new wall adapter because this one's fail.