5G is the fifth-generation mobile technology that began global deployment in 2019, expected to reach over 1.7 billion subscribers and account for 25% of the mobile technology market by 2025. It offers higher speeds, greater bandwidth, and the capacity to connect more devices compared to 4G, enhancing internet service quality, particularly in crowded areas. 5G operates in low, medium, and high frequency bands, enabling various applications, including enhanced mobile broadband and machine-type communications, but its rollout is gradual and dependent on infrastructure development.