Factory Reset (did I do it right?)

[jimmiekain]

I have decided to send my evo3d back and use my evo4g until until something else comes out. I want to make sure non of the data is still on the phone when I send it back to sprint.

Here is what I did..
Turned phone off
Held volume down button and pushed power button
when the phone turned back on into the white screen i selected factory reset with the power button.

When the phone came back on it seemed to have gotten rid of everything but is that it? Do I need to do anything else?

Thanks in advance for the help guys!