But what they can do is confiscate your phone, _image_ it, without the access attempt, and keep the phone as evidence until or unless they feel the need to apply for a warrant for the access.
No. They cannot keep the phone, and they cannot copy the phone data without reasonable suspicion under this ruling (connecting the phone to an external device to copy is considered advanced forensic and already has case law around it).
No. They cannot keep the phone, and they cannot copy the phone data without reasonable suspicion under this ruling (connecting the phone to an external device to copy is considered advanced forensic and already has case law around it).