introduction into the world of telecommunication. How it works from A to B, what is 2G/4G/5G, VoLTE, NR in real life

I'm Alex, and I'm a telco guy and all my carrier i worked in the field of telecommunications in companies like Siemens, Ericsson, Mavenir, T-Mobile and most recently Cisco Austria. My experience is quite vaste and I always tried to remain "up to date". I believe in the power of example so by using real phones and tools I am ready to show you and let you discover how telecom networks are working