Given that they found nothing "useful" on the phone leaves the claim that it was cracked open to question to anyone who takes an evidence-based view of such matters. So does the fact that they haven't disclosed how they're supposed to have cracked it. Or who did it except that it wasn't the company that commentators expected it to be.
They have retreated from a situation which worked out unexpectedly bad for them in PR terms and done so with face intact.