Cook called the ruling by the European Commission "total political crap."
Apple reports declining iPhone sales for the second quarter in a row.
Apple's Worldwide Developers Conference was more a brainstorming session with dozens of new features for its devices than a focused presentation.
But Apple Watch owners remain doggedly loyal to the smartwatch.
Wozniak says smartwatch took Apple into "jewelry market" saying it isn't "the company that really changed the world a lot".
The companies will contest government arguments that the All Writs Act compels Apple to comply with its request.
The Apple case has raised the issue of whether the tech giant gives foreign governments things it refuses to give to the FBI.
Apple's refusal to crack open an extremist's iPhone is a matter of principle—and market share.
The hearing signals the first move by Congress, which has stayed quiet so far on the iPhone encryption case.
Tim Cook says he is ready to take the iPhone case "all the way."
"I don't think that's the way the railroad should be run," says Apple CEO Tim Cook on Obama administration.
Apple's argument that Congress needs new authority to require it to assist the FBI appears to be wrong.
If companies are to be forced to unlock encrypted technology, that mandate should come from Congress.
Cook refused to comply with the government's request to unlock an iPhone of one of the San Bernardino shooters.
A request to decrypt San Bernardino attacker's iPhone raises profound privacy issues.
What the FBI requested was nothing short of a revolutionary assault on digital privacy and security.
It has a myriad of problems and may be unconstitutional.
Tesla boss Elon Musk says Apple's plans for an electric car are an "open secret."