Abstract: An apparatus and a method for calculating an enhanced observed time difference from a mobile station and transmitting the enhanced observed time difference to a servicing mobile location center for a location-based service are provided. The apparatus comprises means for receiving a location-measuring request and assistance data from the servicing mobile location center; means for choosing a base transceiver station, the synchronization channel of which is to be measured, based on response time detected from the location-measuring request and a predetermined priority; and means for calculating an enhanced observed time difference for the chosen base transceiver station and transmitting a location-measuring response, including the calculation result, to the servicing mobile location center.

Abstract: Provided are a Subscriber Identity Module (SIM) card and a method of recognizing the SIM card. A mobile communication terminal to which the SIM card applies has a card installation slot with predetermined connectors. A SIM card is detachably installed in the card installation slot, and includes a first contact pad cluster that has a plurality of contact pads to electrically contact the connectors when the SIM card is installed in a correct direction, and a second contact pad cluster on a same side of the SIM card as the first contact pad cluster, that has a plurality of contact pads to electrically contact the connectors when the SIM card is installed in a direction opposite to the correct direction. The first and the second contact pad Clusters have at least two shared contact pads. The mobile communication terminal has a switching device to switch the at least two shared contact pads, and a controller to read the SIM card connected to the connectors and to simultaneously control the switching device.

Abstract: An apparatus and a method for sensing rotation angle of a folder in a portable terminal are provided. In the apparatus and method, a first motion sensor measures a roll, which is an up/down rotation angle of a main body and a pitch, which is a left/right rotation angle of the main body. A second motion sensor measures a roll, which is an up/down rotation angle of a folder and a pitch which is a left/right rotation angle of the folder. A controller measures up/down/left/right rotation status of the folder based on the main body using the difference between the rolls and pitches measured from the first motion sensor and the second motion sensor.

Abstract: A method for reproducing an AMR message in a mobile telecommunication terminal, the method including the steps of receiving an adaptive multi-rate message decoded by an adaptive multi-rate codec and measuring an overall size of the adaptive multi-rate message, creating plural division adaptive multi-rate message files, each of which is formed by grouping frames in the AMR message based on a predetermined division unit, and reproducing a division adaptive multi-rate message file selected by a user from among the created division adaptive multi-rate message files.

Abstract: An apparatus and a method for calculating an enhanced observed time difference from a mobile station and transmitting the enhanced observed time difference to a servicing mobile location center for a location-based service are provided. The apparatus comprises means for receiving a location-measuring request and assistance data from the servicing mobile location center; means for choosing a base transceiver station, the synchronization channel of which is to be measured, based on response time detected from the location-measuring request and a predetermined priority; and means for calculating an enhanced observed time difference for the chosen base transceiver station and transmitting a location-measuring response, including the calculation result, to the servicing mobile location center.