Trying to save my unlimited data... 2 lines on Nationwide Loyalty Share 550 plan. One of the lines has unlimited data. Can I add a brand new 3rd line to the family plan and get a Moto X, transfer the Moto X from the brand new line to the unlimited line, then downgrade the brand new line to a $9.99 dumb phone rate (and put it in a drawer)? Will this work? Doesn't seem too bad to have to pay $9.99/month * 24 months for a Moto X. Thanks!