I'm looking to upgrading my phone from a 5c to a 6. I'm willing to sell my old phones to pay off my tab then make the switch for the 6. But the problem is that I want to get the same plan that I have of $29/month with tab. The only option that's giving me is the Tab plus that totals my monthly payment of $80/month. I just want to keep the same plan for 29/month + $21 for tab.