NSString * CTSIMSupportGetSIMStatus();
int CTGetSignalStrength();
giving compilation error on xcode 7.3 using bridging header in swift, it was working fine on previous versions.
define your own objective-c method like
+ (int)getSignalStrength {
return CTGetSignalStrength();
}
and call c style method there, as in xcode7.3 c-style methods in objective-c class not calling.