I don't think there's anything "wrong" or "hinky" about GR having an iphone or possibly a new laptop to get on facebook with, whether LE returned these things to him or he had to go buy one. Let's face it, these days we all need our phones and considering his job a smartphone is almost a necessity. And odds are that there daughters need a laptop or pc in order to do school projects/ homework.
I do wish he would answer some questions though. Why not address the affair rumors, and tell how his alibi is airtight (unless that's not true), why not tell us more about the morning she left, like what JR's mood was? Why, when you're "searching for answers" would you talk about how much she had changed, and how it wasn't for the better, and how she had recently made new friends through games etc.?
He had all that airtime to plead for his wife's safe return, and to talk about how she wouldn't leave her kids like that (I believe that's what most friends/family were saying in the beginning), and to try to make people want to help find her.
I'm still not convinced he did something to her, it could be a random stranger, or even suicide (that doesn't seem likely, but anything's possible). I just can't fathom a loving husband giving the interview he gave.
All IMO, of course