INCORRECT SIM CARD IN NEXTEL ic502

I buy a motorola ic502 on ebay. when I turn the phone ON the message "Insert correct SIM. SIM card does not match stored account information." I insert the SIM from my existing phone an i580 but the same message keep showing up. Any posible solution??

I hope someone can give me some info about this problem!!!!!!!!!!!!!!!!!!!!!
PLEASE???

you need to get a new compatible SIM card from Sprint/Nextel. the old just Nextel SIM cards do not work in these hybrid phones

actually you can use any nextel sim (except condors)... its the same sim. the problem here is that the power source phones 'pair' themselves to the sim. you usually can call customer service and have this taken care of...
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