Improved quality of service and excellent signal coverage is the hallmark of any installed wireless mobile infrastructure. As technology evolve, the need to rely on seamless mobile services become crucial. For this reason, this paper investigates the performance of a wireless mobile network cluster of 27 base stations using call quality and drive test approach while proposing continual system optimization as the network system becomes more robust. The Key Performance Indicators (KPIs) were compared before and after base station tuning and results showed that the optimization approach resulted in better performance.