Abstract: Upon establishment of a call, a screen of a mobile station automatically enters into a writing-surface mode. A user of the mobile station is able to write on the screen in the writing-surface mode during the call without having to navigate a menu or other navigation system. The user can cause the screen to enter the writing-surface mode by activating a button or the like and can also press a switch button or the like in order to use the screen in writing-surface mode in either a shared or a non-shared mode. In the shared mode, notes written on the screen while in writing-surface mode can be wirelessly transmitted to another mobile station involved in the call. While in the non-shared mode, notes written while in writing-surface mode are not wirelessly transmitted.

Abstract: A system and method are disclosed in which a service provider in a first environment of a first plurality of competing, overlapping mobile networks has at least one service node. The service provider offers subscriptions based on SIM modules from at least one of a second plurality of mobile telephone operators in a second environment. The first plurality of operators has agreements for interconnect traffic with the second plurality of operators. Mobile users that are visitors in the first environment can communicate, through any appropriate network selected from the first plurality of mobile networks, which avoids the detouring of incoming calls to the visiting mobile users.