We all know what Open means in Android:
Android is an “open” operating system in name only. Sure, you can get the source code and mess around with it, but there are no mainstream generic Android phones that work on any carrier, and no carrier-sold phones are simple to crack open and do what you will.
“Open” refers to a carrier’s ability to modify the phone’s software to its will, not the consumer or developers’. In fact, many Android phones come with garbageware installed on the phones’ home screen, with no way to remove it.
Also related, Is Android Evil?