I use Verizon and they are always more than happy to activate my CDMA capable phone for use on the Verizon network - which I have been using for a very long tim

I use Verizon and they are always more than happy to activate my CDMA capable phone for use on the Verizon network - which I have been using for a very long time and live contract free this way. I also use a very old completely Unlimited plan, so buying a phone from Verizon would cancel this plan and force me on a new contract. Anyhow my point is I have no problems adding a personal device to my plan anytime - many times.