I am on the refund plan on a G3, when I try to update the plan, the newer plans are not available?
Legacy Phones (like the Moto G 3rd) are not able to use the New My Choice Plans and must stay on the Legacy Plans (old Refund Plans or on qualifying line a 1.0 plan)
Find out What Phones Are Available for Use With Republic Wireless’ My Choice (4.0) Plans? – Republic Help … if you want to upgrade, this will point you to what’s available.
A very useful table is provided by the community for comparing features/size etc. etc. Detailed Supported Phone Features