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 (203,205). 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 (203,205).