I was wondering if there is a way to take a "Test Drive" with Straight Talk. I have a VZW iPhone 5s, which their website says is BYOP compatible. Would it be possible to buy one of their sim kits, fire my phone up w/o porting my number over ( using the number that comes with the sim) and if I like it, then getting another ST sim to use with the porting process. And if it doesn't meet my expectations, putting my old VZW sim back in and just carry on as if nothing happened. Would this work? If I don't port my number over initially, will VZW cancel my service if the phone disappears from their network for a few days? Any insight is appreciated. Thx