iOS 检测手机是否安装SIM卡

    /**

 *  检测是否有SIM卡 
 * [CTSIMSupportGetSIMStatus() isEqualToString:kCTSIMSupportSIMStatusNotInserted] 
 */  
extern NSString* const kCTSMSMessageReceivedNotification;  
extern NSString* const kCTSMSMessageReplaceReceivedNotification;  
extern NSString* const kCTSIMSupportSIMStatusNotInserted;   // 为插入SIM卡  
extern NSString* const kCTSIMSupportSIMStatusReady;         // 已插入SIM卡  

id CTTelephonyCenterGetDefault(void);  
void CTTelephonyCenterAddObserver(id,id,CFNotificationCallback,NSString*,void*,int);  
void CTTelephonyCenterRemoveObserver(id,id,NSString*,void*);  
int CTSMSMessageGetUnreadCount(void);  

int CTSMSMessageGetRecordIdentifier(voidvoid * msg);  
NSString * CTSIMSupportGetSIMStatus();  
NSString * CTSIMSupportCopyMobileSubscriberIdentity();  

id  CTSMSMessageCreate(void* unknow/*always 0*/,NSString* number,NSString* text);  
voidvoid * CTSMSMessageCreateReply(void* unknow/*always 0*/,voidvoid * forwardTo,NSString* text);  

void* CTSMSMessageSend(id server,id msg);  

NSString *CTSMSMessageCopyAddress(voidvoid *, voidvoid *);  
NSString *CTSMSMessageCopyText(voidvoid *, voidvoid *);  </pre>