Android Ping!
My take on it: I get it. Encryption, properly done and applied, makes it virtually impossible for anyone - law enforcement included - to get at the data. Yes that makes law enforcement's job harder. However, as law abiding citizens we have a Constitutionally protected (note, not granted) right to privacy. Sure, being able to break encryption would make their job easier. So would being able to stop anyone anywhere and demand identification/papers and their purpose for being there. It would make their job easier if they could walk into anyone's home or place of business at any time and search it. It would be easier for them if they could monitor all our communications without a warrant. (oh yeah, NSA was, and probably still is, doing that)
So yes, I sympathize with law enforcement's plight. I certainly want them to be successful and stop or reduce the effectiveness of terrorism. However, there were some very good reasons the Founding Fathers put these fundamental protections in place. Protections designed to protect us from our government. Lets think long and hard before we allow anyone to take those protections away.
Meanwhile, as Android open-source users I think we had better consider what open source encryption alternatives we have out there. Encryption algorithms and implementations that are provably cryptographically strong. Sorry Apple and Windows phone users, I wouldn't trust any crypto solutions provided by these companies (Google either for Android). Far too easy for the fascist wannabes in government to put quiet pressure on the companies to implement back-doors in their cryptography. I'm already adding cryptography to my Linux based computer at home. I'm lucky, I'm a software guy. I can read the open source algorithm descriptions etc. and build my own from the mathematical basis - no worries of hidden back doors. Not because I have anything to hide (the government already knows just about everything there is to know about me) but because I simply choose not to share. Don't tread on me.