For sports stadiums, it's normally solved by installing ~10 cell towers inside the stadium itself to cope with the load. Cell networks are getting better at in

For sports stadiums, it's normally solved by installing ~10 cell towers inside the stadium itself to cope with the load. Cell networks are getting better at installing small mobile cells now, and some even have 'cell-in-a-truck' designs that can be driven to a busy beach or other place that is temporarily busy to give people service where otherwise the network would be overloaded.