iPhone（在美國）可以合法JB+解鎖了。

目前美國版權局（ US Copyright Office ）已經修訂了DMCA（Digital Millennium Copyright Act），並且列出了六項免於被DMCA起訴的行為，其中直接與iPhone的JB與解鎖相關的為：

(2) Computer programs that enable wireless telephone handsets to execute software applications, where circumvention is accomplished for the sole purpose of enabling interoperability of such applications, when they have been lawfully obtained, with computer programs on the telephone handset.

(3) Computer programs, in the form of firmware or software, that enable used wireless telephone handsets to connect to a wireless telecommunications network, when circumvention is initiated by the owner of the copy of the computer program solely in order to connect to a wireless telecommunications network and access to the network is authorized by the operator of the network.

via U.S. Copyright Office - Fiscal Year 2011 Budget Request