COMPARATIVE ANALYSIS OF THE PERFORMANCE OF 3G NETWORKS VOICE SERVICE IN IBADAN METROPOLIS. Journal of Engineering Studies and Research, [S. l.], v. 30, n. 1, p. 76–89, 2024. DOI: 10.29081/jesr.v30i1.008. Disponível em: https://jesr.ub.ro/journal/article/view/440. Acesso em: 13 sep. 2025.