Answer

There are a few things to be aware of when transitioning from 1.0/2.0 plans to 4.0 plans

Since 3.0 phones are not compatible with 1.0/2.0 plans and vice versa, you'll be moving to a new My Choice (4.0) plan when activating your new phone
The pricing of the My Choice plans will be different from your current 1.0/2.0 plan
Moving to a My Choice plan may mean changing to our GSM network since not all 3.0 phones are compatible with the CDMA network that the 1.0/2.0 phones use
When moving from the 2.0 Republic Refund plans to the My Choice plans, keep in mind that the refund for unused data is not a feature that is included in the My Choice plans

Additional Notes