I recently upgraded to the iPhone SE at Best Buy. They didn't give me the option of upgrading using tab instead of tab plus and so i lost my old plan and im stuck with one over $80, and i was paying $50 before. I see there is a promo $45 for 500 mins and 1 gb data. I would love that plan, and it would total about $66 after the tab charge? Is it possible to switch to this?