Here is the code to get SIM card details of iPhone
1) Add CoreTelephony framework
2) Import following libraries
#import <CoreTelephony/CTCarrier.h>
#import <CoreTelephony/CTTelephonyNetworkInfo.h>
3) Use this code to get details
CTTelephonyNetworkInfo* info = [[CTTelephonyNetworkInfo alloc] init];
CTCarrier* carrier = info.subscriberCellularProvider;
NSString *carrierName = carrier.carrierName;
NSLog(@”carrier : %@”, carrier);
// Here are some parameters
//NSString *mobileCountryCode = carrier.mobileCountryCode;
//NSString *isoCountryCode = carrier.isoCountryCode;
//NSString *mobileNetworkCode = carrier.mobileNetworkCode;