2021 is a year that promises hope after the disastrous 2020 for the whole world. Telecom industry has stayed a constant factor in the lives of the people, connecting them to each other when they cannot go out. Despite their positive roles in the crisis situations; MNO, MVNE, MVNO have suffered greatly. 2021 offers a chance to get back the lost revenue, but it requires billing and charging platform of the next generation.