Don’t terrorists cell phones reach further than the nearest mosque?
In reality, they just want to connect any dots, which may be gone by now but a clue is a clue.
In actuality, the FBI would need/want what info that could be left on that phone? The provider has already, I am sure, turned over all incoming/outgoing calls as well as texts. So a call/contact listing?
They are obviously just fishing like you are. The point is not whether there is anything of value on the phone but where to draw the line. This is not the last phone from a dead terrorist. Nor the last phone acquired somewhere somehow that might have something interesting on it. Stop it here or it will never stop.