unlocked iPhone t-mobile question?

___

New member
Hi, I just unlocked my iphone to use with t-mobile without ANY data/internet plans. But I have that "E" at the top of my phone where it says "t-mobile." Does this mean it's on or off? Will t-mobile charge me if this is on like that? If so, how do I deactivate it or make it go away?

Thank you!
"it" as in referring to EDGE (the internet data?)
 
Top