The 10% Rule Applies to Mobile Capex

Some network capex assumptions seem remarkably stable after 50 years. An example is the adage that a fixed network operator “has to do something” for about 10 percent of the physical plant every year. 

That has proven a useful rule of thumb for cable TV and telco access networks, and now also seems to be useful for mobile networks. 

source: Allot

Essentially, that means every fixed or mobile network is potentially 100-percent renewed every decade.