Which cellphone can use 3 sim cards simultaneously?

I need a cellphone that will have 3 slots for 3 sim cards. The purpose is for me to be able to insert these 3 sims into the phone so I can receive calls simultaneously on all of them without having to switch lines.

Which cellphone can use 3 sim cards simultaneously?
Those extra slots are probably for memory cards rather than SIM cards. Try and see if a Transflash card can fit.
Reply:Sorry, that phone does not exist yet.