iOS设备信息

iOS查看是iPhone几：iOS - How to get device make and model?

#import <sys/utsname.h> // import it in your header or implementation file.

+ (NSString*) deviceName
{
    struct utsname systemInfo;
    uname(&systemInfo);
    
    return [NSString stringWithCString:systemInfo.machine
                              encoding:NSUTF8StringEncoding];
}

查看是iPhone还是iPad

NSString *device = [UIDevice currentDevice].model;

查看系统版本

[UIDevice currentDevice].systemVersion

 iOS在7以后不能查看IMEI信息，提供了一个唯一标识

[device.identifierForVendor UUIDString]

 查看网络状态

转自：iOS Detect 3G or WiFi

iOS7之后可以更精确判断网络状态

        CTTelephonyNetworkInfo *netinfo = [[CTTelephonyNetworkInfo alloc] init];
        NSString *radio = netinfo.currentRadioAccessTechnology;
        if ([radio isEqualToString:CTRadioAccessTechnologyGPRS]) {
            networkType = @"2G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyEdge]) {
            networkType = @"2G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyWCDMA]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyHSDPA]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyHSUPA]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyCDMA1x]) {
            networkType = @"2G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyCDMAEVDORev0]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyCDMAEVDORevA]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyCDMAEVDORevB]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyeHRPD]) {
            networkType = @"3G";
        } else if ([radio isEqualToString:CTRadioAccessTechnologyLTE]) {
            networkType = @"4G";
        }