Want to remover superuser from my zio

[jofisher]

My son download a root app that I took off but it left an app called super user on my phone. I want it gone. Please help.

 

[tp4bama]

do you know if he actually rooted your phone?
do you know what it means to be rooted?

 

[teddyearp]

:welcome: More details please. What kind of phone is it? Does it have a custom recovery on it?