iphone : How to keep 3G/GPRS preferred network in presence of Wifi? <p>I am developing an application that communicates (UDP communication) with our server remotely through 3G/GPRS. As we have to establish serial communication with a digital device and our application through Wifi.</p> <p>Now the problem is that when application connects with wifi it rejects 3G/GPRS and tries to find internet connectivity on wifi which it could not and as a result it lost connection with server.</p> <p>Now I want to know that how can I keep my connection with 3G/GPRS and as well as with Wifi so that I could communication both with the server through internet (3G/GPRS) and with the device through wifi.</p> <p>(Wifi does not have Internet at the moment as the application is using remotely in a Cab/Taxi)</p>