I am interested in getting the Samsung Moment but I'll need to wait awhile if I have to purchase it as an upgrade through sprint. It appears that I can get it through wirefly.com for $99, is this true? Are there any stipulations? Sprint recognizes this company and they allow it? I currently have 2 phones with sprint on separate lines, one of them is my girlfriend's phone. I have the Everything Data Share 1500 plan. Can I still upgrade through a site like wirefly and keep this plan or get something similar? I need to keep the 2nd phone active, and with unlimited data, etc. Thank You in advance.