I can't seem to get caught up so excuse if someone has already mentioned this. I took it that she swapped sim cards because the blackjack would not hold its charge (which by the way is a popular problem with blackjack) and then misplaced the blackjack phone. AT&T would have a record of both phone purchases, if she was lying about the blackjack she would of said she bought it from a friend etc, not from an AT&T store.
I did think it was a hint when he asked if she was at Universal for work or fun and she said something about not work, and he so for fun and she responded not exactly for fun and he said I got ya. So there is something behind that in my opinion.
Thats interesting to know about the Blackjack and holding a charge. I did not know that. I wonder why she wouldnt have taken it back? It was new....I would have.
Maybe she was there at Universal looking for Caylee?