I have an Android phone that works great when using WIFI connection. The Android Exchange Active syncs greatly and I can sync my emails without any fuss but the moment I turn off the WIFI and use mobile data 3G network; I am into all sorts of trouble. I can’t even connect to server and sync my emails. Why is my Android Exchange Active sync only working on WIFI network but not on the mobile data 3G network? How can I fix it? I would be really glad if someone can assist me on this. Thanks.