swap

[xoxo4u]

hey everyone..
like many people i swapped my cell for a titan, and didn't get charged n didn't sen tit back....
now im wondering if i can use both cells... for example use a cell for a few days then if i go to a diff place use the other one .... but my only concern is i dont want to call sprint every time i want to switch my 3 cells and activiate it...
like with cingular i would just use my cells depending where i was going with ust a sim card...

is there a way i can activate my cells on my own? without calling them?

and how do i do that ?