It depends on the sequence of events. If you are already arrested and charged with a crime, and a warrant is issued, it's too late to wipe. But if the cops have

It depends on the sequence of events. If you are already arrested and charged with a crime, and a warrant is issued, it's too late to wipe. But if the cops have you pulled over on the roadside and demand you unlock your phone, you should be able to wipe with impunity.