Ubuntu to replace Android?

There are plenty of ways to void the warranty on your new tablet or smartphone. But according to the Free Software Foundation Europe (FSFE), ???rooting??? it (gaining super-user rights so that you can change any of the software in it) and even changing the operating system for another one are not among the ways to render yourself without a warranty. In Europe it seems rooting may be OK, which is good news for Canonical’s plan to replace Anddroid on some devices