Unfortunately more and more functionality has been moved into the closed-source Google Framework over the past few years. Some of this is a result of Android's

Unfortunately more and more functionality has been moved into the closed-source Google Framework over the past few years. Some of this is a result of Android's terrible update situation: the only way for Google to get new software to many Android users is through software they can update, unlike the OS which OEMs control. But the fact that Google hasn't open sourced the Google Framework tells a lot about how "open source" Android really is. I wish we had a decent open source phone OS out there, since I don't trust Apple to produce good software (and increasingly, hardware) and I don't trust Google... well, I just don't trust Google. Our current duopoly is a pretty awful situation for consumers.