The consequence for all of the lying and not following directions is to lose both your phone and iPod for one week.

Losing his phone doesn't make an impact.  Losing his iPod.  No impact.

Both hurts.

I can tell by the slamming of doors and screaming about how I am unfair and unreasonable.

He came to my room to tell me that he wanted to renegotiate the consequence.  He will give up TV and movies for six weeks.

We don't negotiate consequences.  This isn't a democracy.  You aren't getting your way.

Being disrespectful and calling me names is not helping your case that you are "mature" and are going to stop lying.

Consequence stands.  No discussion.