I have two accounts with two plans, two phones and two phone numbers, one $50 plan 5GB and a $47 plan 8GB. No tab balance on either. I want a new phone for the $47 account - can I consolidate the two by adding a line to one account? If I add a line to the $50 account and order a new phone ($24 tab), can I migrate the phone nunmber from the $47 account and close that account? What will my total new monthly cost be?