A:AnswerVirgin Mobile is now an iPhone only carrier. You won't be able to activate a non iPhone on them. But I did activate it on Sprint's postpaid BYOP plan.
A:AnswerYes. Single nano or dual nano sim using the holder. You will have to YouTube to see how it works, but you will basically not using the upper portion of the holder the added memory, instead place the second nano sim the in the direction as the first sim was placed.