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copied!<p>Update: Nov 4 2013</p> <p>Using Reachability 3.0 version on iOS7</p> <p>To build on top of @NR4TR and @codecaffeine's answers:</p> <p>There are 5 ways to do this (not compiled :)</p> <pre><code>#include <ifaddrs.h> #include <arpa/inet.h> //1 - Is www.apple.com reachable? Reachability *rHostName = [Reachability reachabilityWithHostName:@"www.apple.com"]; NetworkStatus s1 = [rHostName currentReachabilityStatus]; //2 - Is local wifi router or access point reachable? Reachability *rLocalWiFi = [Reachability reachabilityForLocalWiFi]; NetworkStatus s2 = [rLocalWiFi currentReachabilityStatus]; //3 - Is my access point connected to a router and the router connected to the internet? Reachability *rConnection = [Reachability reachabilityForInternetConnection]; NetworkStatus s3 = [rConnection currentReachabilityStatus]; //4 IPv4 standard addresses checking instead of host to avoid dns lookup step struct sockaddr_in saIPv4; inet_pton(AF_INET, "74.125.239.51", &(saIPv4.sin_addr)); saIPv4.sin_len = sizeof(saIPv4); saIPv4.sin_family = AF_INET; Reachability *rIPv4 = [Reachability reachabilityWithAddress:&saIPv4]; NetworkStatus s4 = [rIPv4 currentReachabilityStatus]; //5 IPv6 addresses checking instead of host to avoid dns lookup step struct sockaddr_in saIPv6; inet_pton(AF_INET, "2607:f8b0:4010:801::1014", &(saIPv6.sin_addr)); saIPv6.sin_len = sizeof(saIPv6); saIPv6.sin_family = AF_INET; Reachability *rIPv6 = [Reachability reachabilityWithAddress:&saIPv6]; NetworkStatus s5 = [rIPv6 currentReachabilityStatus]; </code></pre> <p>Handling status is same</p> <pre><code>if (ReachableViaWiFi == s1) return @"WiFi"; //@"WLAN" if (ReachableViaWWAN == s1) return @"Cellular"; //@"WWAN" return @"None"; </code></pre>

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