64k sim card help

[Guest madmaxedcn]

i went today to cingular all the att to suncom problems had me pissed off...so i got a new 64 k sim card with my new cingular cellphone and when i put it in my unlocked mpx 200 with 2003 that i used with att and suncome with no problems i get a sim failure i hit ok and it starts,it takes a wile to say cingular and sometime after a few min it say no service.the sim manager doesnt work eather,it says fail to initialize sim, possible radio off or sim failure. pls help :?: