my two galaxy s3 can't detect sim cards

hello


I have two galaxy S3

and they both can't sim detect cards


things i tried :-
1- remove sim clean it
2- change roms
3- go back to stock rom
4- patched kernel and modem
5- factory reset , wipe data cache everything
6 - changed sim , tried the sim in other phones worked



Can you help please :confused:


thanks :good: