Three-dimensional MIMO (3D MIMO) is applied as a hopeful method in massive MIMO networks to increase the cellular performance by setting out aerial elements in both straight and vertical proportions. Radio transmission of user equipment (UE) is reflected only in horizontal domains by effectively applying 2D beamforming. It is very useful in expanding the capacity of your network and also enabling complete usage of the band. Companies like Huawei and ZTE have already made significant advancements in this regard.