In case you missed it, Next G Mobile, a former Verizon MVNO, went offline and out of business as of 12/31/2013. This is one of the problems of smaller less known MVNO's, they don't always last. So if you are thinking of switching to an MVNO, it's always best to stick with the bigger ones if you want one that's going to stick around. Fortunately most of our Best MVNO picks are some of the bigger companies. Check here for a refresher of our picks.