wod said:
Removing the carrier lock shouldn't be illegal but modifying the OS on a phone could be on dodgy ground. a lot of people root there android phones so what do it really do much harm ?
Modifying the OS on most mobile phones is prohibited, as most of them are closed-source, but Android is based upon open-source software (Linux), so they can't really say no to modifying the OS cos google doesn't own the core of the OS, the Linux kernel, so you end up with modified OSes like Cyanogenmod and the like giving access to the latest versions of Android (such as JellyBean), the only closed-source stuff they're not allowed to touch are the drivers that operate the periphery built into the devices (such as sound, cameras, bluetooth, wifi, etc.), making them tough to work with and only really any good for advanced users...
And of course, all mods on 'droids are reversible simply by reflashing a stock firmware, be it a network-bloated version or an OEM version from SIM-free models which have no branding other than the manufacturer's...
Apple & Microsoft OSes aren't based on open-source, so, they can be gits about what you can and can't do with their mobile OSes, though I've yet to hear about them actually cracking down on modifiers altering their software to make it, what's the word, oh yeah, "work", but I'm sure if they had their way, they would, but again, if they did, they'd lose a lot of customers and would end up down the toilet financially...