A method for management of a handover of network service for a user equipment, UE, from a first mobile telecommunication network cell operated by a first mobile network operator, MN01, to a second mobile telecommunication network cell operated by a second mobile network operator, MNO2; wherein the first cell is operated by a first base station connected to first MN01 infrastructure ; wherein the second cell is operated by a first base station connected to second MNO2 infrastructure ; wherein the UE moves from the first to the second network cell, the method comprising: a) a step of at the first MNO1 infrastructure storing transfer-related data of the first network cell in a distributed ledger, DL , and at the second MNO 2 infrastructure storing transfer-related data of the second network cell in DL ; and b) a step of at the first MNO1 infrastructure retrieving said transfer-related data of the second network cell from the DL , providing said transfer-related data to the UE , wherein the UE is connected to the first network cell and/or providing said transfer-related data to hardware of the first network cell that communicates with the UE ; wherein the second network cell is neighboring and/or overlapping the first network cell; wherein the first MNO1 infrastructure and the second MNO2 infrastructure of both MNOs are connected, via respective connections and , to the DL , which is shared between the first MN01 infrastructure and the second MNO2 infrastructure ; wherein the transfer-related data of the first and the second network cell comprise a frequency and an identifier, of the neighboring cells of the first and the second network cell; wherein the DL comprises a support service 202 and database service 204; and wherein the support service is a local service at a respective MNO infrastructure and is configured to interact with the database service via smart contracts . wherein the first cell is operated by a first base station connected to first MN01 infrastructure ; wherein the second cell is operated by a first base station connected to second MNO2 infrastructure ; wherein the UE moves from the first to the second network cell, the method comprising: a) a step of at the first MNO1 infrastructure storing transfer-related data of the first network cell in a distributed ledger, DL , and at the second MNO 2 infrastructure storing transfer-related data of the second network cell in DL ; and b) a step of at the first MNO1 infrastructure retrieving said transfer-related data of the second network cell from the DL , a) a step of at the first MNO1 infrastructure storing transfer-related data of the first network cell in a distributed ledger, DL , and at the second MNO 2 infrastructure storing transfer-related data of the second network cell in DL ; and b) a step of at the first MNO1 infrastructure retrieving said transfer-related data of the second network cell from the DL , providing said transfer-related data to the UE , wherein the UE is connected to the first network cell and/or providing said transfer-related data to hardware of the first network cell that communicates with the UE ; wherein the second network cell is neighboring and/or overlapping the first network cell; wherein the first MNO1 infrastructure and the second MNO2 infrastructure of both MNOs are connected, via respective connections and , to the DL , which is shared between the first MN01 infrastructure and the second MNO2 infrastructure ; wherein the transfer-related data of the first and the second network cell comprise a frequency and an identifier, of the neighboring cells of the first and the second network cell; wherein the DL comprises a support service 202 and database service 204; and wherein the support service is a local service at a respective MNO infrastructure and is configured to interact with the database service via smart contracts . <EOS>