The supreme court (as in the highest court) made the following ruling:
The Supreme Court reversed as to Riley and affirmed as to Wurie. The police generally may not, without a warrant, search digital information on a cell phone seized from an individual who has been arrested.
The exception for searches incident to arrest does not apply; such
searches must be limited to the area within the arrestee’s immediate
control (the cops also violated the law in seizing Lane's computer) where it is justified by the interests in officer safety and in
preventing evidence destruction.
Read the case here!