3g

In my code I am using requestRouteToHost() method: Does this routing means changing the WIFI to 3G or vice versa?? My code is not working... public static boolean isHostAvailable(Context context, String urlString) throws UnknownHostException, MalformedURLException { boolean ret = false; int networkType = ConnectivityManager.TYPE_WIFI; ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); if(cm != null){ NetworkInfo nf = cm.getActiveNetworkInfo(); if(nf != null){ networkType = nf.getType(); } URL url = new URL(urlString); InetAddress iAddress =

I want to use a messaging protocol that works fine over 3G, but not over some corporate firewalls. How can my app force the use of the cellular network when it fails to connect over WiFi even in the case that the WiFi network is reachable? EDIT: After reading through the implementation of the Reachability class I remain unsure whether the two are indeed mutually exclusive. It could well be possible to discover both interfaces via gethostbyname() , which I might try just to see what comes out. Use getifaddrs to enumerate the network interfaces. Look for ifa_name that starts with "pdp." This

If I'm building a smartphone app that regularly downloads data from a server, and also intermittently uploads data (analytics, ads, etc.) what can I do to minimize the battery life impact of those transfers? The battery impact of transfers using the wireless radio (2G, 3G, LTE, etc.) is particularly significant. Is there anything about the power-use profile of the wireless radio that should affect my choices of when, what, and how to transfer data in order to minimize its impact on battery life? This answer is summarized from The Android Training class, Transferring Data Without Draining the

how to programmatically start 3g connection on iphone? do I need to use socket api? You don't need to. You just access whatever resource you need from the Internet, and the phone will handle connecting in a suitable manner. If you want to know whether there is a connection at all, and if so what kind is being used, there is an API and a sample from Apple . Also see Apples iPhone Network Access: Best Practices . The iPhone SDK abstracts out (in most cases) your connection type. You cannot choose to use wifi vs 3G vs EDGE vs Bluetooth. It might be possible if the device is jailbroken, but it's