[CTSIMSupportGetSIMStatus() isEqualToString:kCTSIMSupportSIMStatusNotInserted]
可以判断是否插入了sim卡。
需要CoreTelephony.framework。
代码语言：javascript复制 /**
* 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> 
