Note that the Obama administration supported police being able to search people's cell phones without a search warrant

From the Washington Times:

The Supreme Court ruled Wednesday that police cannot go snooping through people’s cell phones without a warrant, in a unanimous decision that amounts to a major statement in favor of privacy rights.Police agencies had argued that searching through the data on cell phones was no different than asking someone to turn out his pockets, but the justices rejected that, saying a cell phone is more fundamental. . . .
The Obama administration and the state of California, both of which sought to justify cell phone searches . . .
The court did carve out exceptions for “exigencies” that arise, such as major security threats.