Due to the fact that mobile devices are in widespread use, many applications including Location Based Services (LBS) had been involved to deliver relevant information to customers anywhere at any time and thus based on their profile and geographical position. However, with the increasing number of geographical data and distributed geospatial applications with heterogeneous databases, many problems may arise related to 1) the interoperability of geographical databases, 2) the integration of geospatial data / metadata of services and 3) the development of user friendly visual portals on mobiles. As many LB standards like OGC and applications were demonstrating the feasibility of portals from a unique provider, the objective of this paper is to pursue further in the approach of generating visual portals by allowing many providers to commercialize their services overlaid on a unique base-map. Furthermore, we have implemented this approach via our prototype MPLoM (Multi-Providers LBS on Mobile Devices).