Well thanks for the extra info. E5-00's connection settings guide is here (amongst which is defining APN or Access Point Groups which includes Wifi). However if certain other apps are able to connect successfully to the net both on Wifi and GPRS, chances are your APN settings are intact (unless if it is nessissary to manually add and use a new APN). Some apps on the otherhand hand requires to be run first, then navigate to their Settings > Connections > then Carrier's GPRS/Wifi Network device. Above all you can contant Nepal for GPRS configuration particulary (who will gladly walk you through). I Will be happy to further input to the best of my knowlegde on this as long as needed.