Upgrade and keep UDP

[GatorsUF]

My scenario:

Phone A (Me)
Unlimited data - eligible for upgrade

Phone B (Wife)
Tiered - Not eligible until next year

Phone C
Business Phone - Not a smartphone

Phone D (Boss's Wife)
Tiered - eligible for upgrade

Phone E (Boss)
Unlimited - eligible for upgrade

Can I transfer the upgrade from A to B and upgrade on the already tiered plan, then switch the phone to my line after I get it?

or

Should I upgrade on my boss's wife's line so I am not transferring upgrades? Then switch the phone to my line?

 

[GatorsUF]

Anyone?

 

[Cares]

Your first plan should work and if you try it and lose your unlimited you can always revert back by returning your phone in the grace period.

 

[GatorsUF]

Did not know there was a grace period to revert back to UDP, thought once they got you switched the hammer had dropped and there was no going back.