So what is the difference between 4g and 5g https://www.uctel.co.uk/blog/whats-the-difference-between-3g-4g-and-5g ? 5G outshines 4G with faster speeds, lower latency, and better connectivity for smart devices. While 4G serves us well, 5G's potential in automation, IoT, and AR/VR is a game-changer. However, rollout costs and security concerns are challenges worth noting.