As far as I know the selection of officially unlockable phones is extremely humble. Unlocking a phone usually means using hacks voiding warranty and/or violating licenses. I absolutely support the people choosing to go this way morally (and am one of them myself) yet I think it's sad that people are forced to do illegal-ish hackery to configure their phones a reasonable way and protect their privacy. I have also heard about a man that was put in prison for hacking his nintendo so the whole thing gets scarier and scarier.