My initial training was in aviation ground electronics. I could still design and build a superhet AM receiver from scratch and build from the parts in my worksh

My initial training was in aviation ground electronics. I could still design and build a superhet AM receiver from scratch and build from the parts in my workshop here. I am well aware of how immensely complicated the cell-phone system is. Every single component is complicated standing on the shoulders or more complication. QAM is incredible in its versatility and the antennas are so incredible they are works of art. Let alone the routing and higher level protocols. That said, cell systems are designed for redundancy and varying loads. Modern cell towers are spaced so that you can see multiple towers at any one time. They often have power backup and multiple backhauls.