Radio Shack has just opened up another smartphone promotion. This time the company is offering the EVO 4G for $99 when you trade in a new phone and sign a 2-year agreement.

You have until Christmas day to claim your discounted EVO 4G. However, it’s unclear what qualifies as a “phone trade in” hopefully it can be any phone.

Any of you readers plan on taking them up on this offer? What phone did you trade in? Let us know in the comments!

[Via IntoMobile]