We further assess the accuracy of the ANN potential by studying the lattice dynamics, which requires higher order derivatives of the PES, to build the dynamical matrices in order to ob-tain properties such as phonon dispersions. We employed the finite displacement method as implemented in Phonopy 72 package to obtain the interatomic force constants. These calculations involve creating supercell structures with an optimal number of displacements based on the structural symmetry. We considered the phonon dispersions of two experimentally synthesized crystalline phases of pure C, namely cubic diamond F d 3m (C tra, particularly in the case of acoustic modes, where frequency discrepancies are minimal.