The winner of the assistant wars might able to take a cut of purchases made on its platform and also steer users toward its products and those of its allies.
The tech giant hopes to expand Siri's capabilities well beyond Apple apps and searching the web. An example might be to allow the personal assistant to book a ride through a ride-hailing app listed in Apple's App Store.
Faced with lackluster sales of smartphones in the United States, Apple has bet on China as a major new growth engine. But progress there has been disappointing.
The App Store, Apple Music, storage center iCloud and mobile wallet Apple Pay and other services generated nearly $6 billion in revenue, up 20 percent from the previous year.
Under the U.S. vulnerabilities equities process, the government is supposed to err in favor of disclosing security issues so companies can devise fixes to protect data.
The abrupt end to a confrontation that had transfixed the tech industry was a victory for Apple, which vehemently opposed a court order to unlock the device used by the San Bernardino shooter.
The government had insisted until Monday that it had no way to access the phone used by one of the killers in the December massacre in San Bernardino, Calif.