[Lawtonfogle]

The location of the body isn't the evidence, it is the body found there that is the evidence. This is why forcing someone to tell the location of the body and holding them in jail until they do is perfectly fine. Except that would be unconstitutional.

[tormeh]

The massive difference being that you might not have buried the body at all, but that there is definitely your phone.

[MacsHeadroom]

No, there is definitely a place (in fact, there are lots of places)- and it could have a body.

The fact that you have a phone, which could contain something, doesn't make the phone case any different.

[Lawtonfogle]

Which you might not have the password for. You could've recently changed it and forgotten it (I've had to reset phones of friends and family who have done this). Or you never locked it but someone else did. Or a number of other situations where the password, like the body, might not exist.