Quick Question.

I have a customer I just signed up for a new activation, and her husband is moving down here from Canada.

He has the Sony K850 and wants to know if I can add him on to her plan and he can still use his Rogers K850i with an AT&T Sim.

Not sure if or how he needs to unlock the phone once he comes down her next week.

I need the new Activation so any help would be great!

Thanks