mobile

hey guys!
yesterday, i found that samsung in my country has released lollipop update for gs4 i9500 so i was using cyanogenmod GearCM latest update and i used odin to flash the ROM ( downloaded from sammobile) after installing i realized that the Sim Card is no inserted and signal bar gives me something like circle with line in it (like disabled sign) so i started to remove and instert the sim which i didn't touch it previously and i tried to go back into CM again and same problem .. i wiped all data several times and cache . each time i tried to open data it said "insert sim card first" and when i try to make call it says "no mobile network" .
so guys what should i do and what is that meaning :confused:
Thanks ! .