I'm so excited for my N4 to arrive, but I want to sort out a couple of questions regarding my number. Ok, so I looooove my cell number. I have had it since I was 16 and it's so easy to remember and give to people. So, could I use Google voice kind of like a vault for my number? Like, could I port it TO GV from Verizon for whatever reason, not use it for a while, and 6 months down the road port my number from GV to straight talk or T-Mo? Secondly, regarding sims; I anticipate that I am going to be trying multiple MVNO's for the first few months of owning my new N4 to find out which one I like the most/works best for my needs. So if I buy a ST sim, port my number to it, use it for a month then decide I want to try T-Mo and port my number to a T-Mo sim. Can I come back to the old ST sim after a month and port my number back onto it? Or am I going to have to buy new sims every time I want to come back to a pre-paid service that I have had previously? I hope this isn't the case because ST's sims are $15 a pop! Thanks to anyone who can help me out and is more knowledgeable when it comes to going pre-paid. I'm so excited to give verizon the big fffuuuuu in two short weeks!