A method used in wireless communications for displaying an icon on a wireless communications device indicating that a calling party is a subscriber of a same wireless communications service provider of a called party. A signed bundle may be modified by removing a file specified in a server file list from a plurality of files in the bundle. A peripheral circuit section in which peripheral circuits are formed is provided on a side of the light-receiving section. The upper transition region may have a plurality of apex angles progressively increasing in size from the central region of the strike face to the heel andor toe.