On WP 7 and WP 7.5 I have to develop the app on C#, nonetheless, on WP8 I can develop an app on native C++
Assuming the corresponding programming language, I was wondering if it is possible to run a process or an app without GUI on Windows Phone 7, 7.5 and 8.
Is it possible? How can I do it? Any example around the web?
Apps need to have UIs on windows phone. You can’t just deploy straight-up services. But apps with UIs can start background processes. I’ve expanded in the past on what these background processes are at a related question regarding full background multitasking @ How to run application in background in Windows Phone?