I want to upgrade my phone, it's starting to get old and slow, and the battery just isn't working that well anymore. It's a Note 4, got it Nov 1 2014. I know similar questions have been posted before, but honestly I found the answers pretty confusing. Basically, I have a great plan. $55/mo, unlimited calling nationwide, unlimited texting, and 5 gig of data. My question is, can I go on to the new tab program, yet keep my super duper awesome monthly plan, or do I need to change to a current plan?