A method for handling telephone calls in a mobile network comprising mobile switching nodes and for handling data pertaining to said telephone calls, wherein, for a telephone call from a calling subscriber (1'; 1") to a mobile phone of a called subscriber, the method comprises the steps of: I- establishing a connection with a device for storage and management of data relating to the telephone call, when the called subscriber is not reachable, due to the mobile phone being in the detach mode or due to the absence of a radio-frequency signal, and when, at the same time, a call diversion service towards an answering service or another phone number is not operative; said storage and management device cooperating with the mobile switching nodes through the management of a signaling protocol; II- at said storage and management device, receiving only the signaling component of the telephone call and extracting the telephone number of the calling subscriber from the received signaling component of the telephone call, and recording the telephone number and the hour/date of the telephone call in a number list comprising telephone numbers of calling subscribers that already tried to reach the mobile phone of the called subscriber; IIIa- at said storage and management device, cooperating through a protocol with a Home Location Register to receive from said Home Location Register a notification when the mobile phone of the called subscriber is reachable again; and IIIb- at the moment the mobile phone of the called subscriber is reachable again, sending from said storage and management device to a short message service center messages including data, relating to the telephone calls, that are comprised in said number list; IV- sending from the short message service center to the mobile phone of the called subscriber SMS messages including said data. I- establishing a connection with a device for storage and management of data relating to the telephone call, when the called subscriber is not reachable, due to the mobile phone being in the detach mode or due to the absence of a radio-frequency signal, and when, at the same time, a call diversion service towards an answering service or another phone number is not operative; said storage and management device cooperating with the mobile switching nodes through the management of a signaling protocol; II- at said storage and management device, receiving only the signaling component of the telephone call and extracting the telephone number of the calling subscriber from the received signaling component of the telephone call, and recording the telephone number and the hour/date of the telephone call in a number list comprising telephone numbers of calling subscribers that already tried to reach the mobile phone of the called subscriber; IIIa- at said storage and management device, cooperating through a protocol with a Home Location Register to receive from said Home Location Register a notification when the mobile phone of the called subscriber is reachable again; and IIIb- at the moment the mobile phone of the called subscriber is reachable again, sending from said storage and management device to a short message service center messages including data, relating to the telephone calls, that are comprised in said number list; IV- sending from the short message service center to the mobile phone of the called subscriber SMS messages including said data.