>The contents of the phone could be corroborated by other evidence. It could be used to tell the security services where to look for "facts" but not be itself regarded as a fact.
[Update]I think what I wrote was wrong, so I removed the evidence! :)[/Update]
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges