GSM users (e.g., those with service from Cingular or T-Mobile) have been able to get their phones unlocked reasonably easily to let them put a SIM card from a different carrier to change their service. CMDA phone users (e.g., those with service from Sprint PCS or Verizon Wireless) don’t have SIM card that contain their identify and have had a more difficult time in moving their phone from one service to another.

CNN reports that…

Cell phone owners getting new rights

…that this is changing now that the Library of Congress Copyright Office ruled that Cell phone owners will be allowed to break software locks on their handsets in order to use them with competing carriers under new copyright rules announced Wednesday.