P.Mobile

ok i just picked up my Nexus 5 from the ups center!!!! soooooo happy.. so now im sitting here ready to activaye this beast.. i have the sim they sent me.. so what do i need to do to activate?? do i put the sim in the phone then turn it on?? then ca;; sprint.. please tell me exactly what i need to do... thanks guys!! so i have to give them my IMEI number without the last digit??

hello all.. im getting my nexus tomarrow... i have the sim in my sprint s4 now.. and i also have the sim they sent to me.. which one should i try and use in my nexus?? im getting the black 32 gig.. i read people can activate them now but NO LTE!! ?? that stinks.. so should i call sprint to activate my phone tomarrow or should i try online?? thanks guys