In USA - 'Unlocking' your cellphone will be illegal starting Jan 27
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You also could buy a phone that clearly states it's unlocked. Some people purchase various types of software online or make changes, edits, and tweaks to the software in the phone to unlock cell phones that come already locked. The changing of the software in the phone now is illegal. You can't unlock your cell phone. And getting the carrier's permission in writing is very difficult due to the new law and also the copyright. You can refer to the Digital Millennium Copyright Act (DMCA).
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