Abstract: A method, data transmission element and stand for enabling optical data transmission in a mobile station. A mobile station, which comprises means for transmitting and/or receiving data in optical format, is arranged in a stand which comprises a data transmission element. The data transmission element transmits the optical signals transmitted by the mobile station to the surrounding area of the stand and/or the optical signals intended for the mobile station from the surrounding area of the stand to the mobile station. The optical signal propagates through the data transmission element in optical format and can be infra-red light, visible light and/or ultra-violet light.

Abstract: A data card holder (20) is provided which comprises a housing defining an aperture (22) for receiving the data card (21), such as an RF card or SIM card, and a cover (27). The cover is movable with respect to the housing, between a closed position in which it prevents removal of the card from the housing, and an open position in which it allows removal of the card from the housing. Also provided is an ejector (28) which is coupled to the cover (27) so that it ejects the card from the housing when the cover is moved to its open position. Preferably the cover (27) and the ejector (28) form a unitary structure.

Abstract: The invention relates to an arrangement for securing the SIM card (6) in a mobile telephone. By means of the arrangement according to the invention the SIM card (6), which is normally held in place by the spring force exerted by a spring (11) attached to the battery (10) of the telephone, will remain in place while the battery (10) is in place and also while the battery (10) is being removed from the mobile telephone frame (1). This is accomplished by including in the telephone frame a protrusion (8), behind which the SIM card (6) is locked as a result of said spring force. The arrangement according to the invention can advantageously be applied to portable mobile telephones with SIM cards (SIM, Subscriber Identity Module).