BUt wouldn't an i-pod be an electronic device?
I included the i-pod in my post. I guess I didn't make myself clear, so I'll try to rephrase it (only for you, I had decided I wouldn't respond to any comments about it!)

If he had said that the last text was sent from his cell phone at 9:37, people would be convinced that he could have sent messages through one of the other devices later that night. I think he said it so we/they would know no other messages were sent later from any of the devices. :drumroll:
MOO
No meaning behind the emotes, I just had to use some.