A method for providing additional services by a UICC applied in a cellular phone is provided. First, an aperture would be formed on the UICC provided by a first service provider, and the UICC may include a first IC and first contact pads coupled to the first IC. This aperture could be formed by means of a puncher. After that, a laminated integrated circuit card would be attached to the UICC by a second service provider to form a dual UICC. Such laminated integrated circuit card may include a second IC and second contact pads coupled to the second IC, and the second IC is deposited in said aperture. Preferably, the size of the second IC or the shell protecting the second IC fits perfectly for the aperture, and the great reliability could therefore be ensured. Finally, the additional service is able to be provided based on the dual UICC via wireless transmission or reception of the cellular phone.