The FCC has told carriers that they must voluntarily agree on what rights consumers have in relation to unlocking their mobile devices, or the agency will make a ruling dictating policy instead.

According to Reuters, the Federal Communications Commission (FCC) has made the demand based on how carriers conduct their business around contracts. When a consumer signs up for a long-term contract in order to receive a mobile device for subsidized prices or for free, the phones are generally locked to a specific carrier -- and this is the issue at heart for the U.S. regulator
Read more at: FCC: Wireless carriers must agree on phone unlocking rules | ZDNet