The present invention relates to a method for distribution of information in a primary cellular network. The hotmelt adhesive comprises a photoinitiator which may be present in the form of an additive not attached to the polyacrylate andor not attached to the oligoacrylate, may be incorporated by copolymerization into the polyacrylate, andor may be attached to the oligoacrylate. Between tip ends of the discharge electrodes, connection end faces of a pair of optical fibers are arranged so that the connection end faces thereof are opposed to each other and the connection end faces of the optical fibers are fusion welded by discharge heat from the discharge electrodes. The display control unit rotates both the digital video image to be displayed on the display device and the information relating to the portable device by 90 degrees, if it is determined by the determination unit that the digital video image to be displayed on the display device is in the landscape format.