[self setReachability:[Reachability reachabilityWithHostName:@"http://www.google.com"]];
    [[self reachability] setReachableOnWWAN: NO];
    [[self reachability] setReachableBlock:^(Reachability * reach) {
        NSLog(@"El dispositivo cuenta con conexión a internet!");
    }];

    [[self reachability] setUnreachableBlock:^(Reachability * reach) {
        NSLog(@"No hay conexión a internet en estos momentos!");
    }];

    [[self reachability] startNotifier];