This document discusses business model innovations that have helped connect lower-income consumers to mobile networks. It notes that while over 75% of the world's population is covered by mobile networks, most companies focus on higher-income segments. Two key barriers to universal access have been affordability and availability of infrastructure. Some companies have adopted shared-use models to provide access, but individual ownership models using installment plans and micro-financing have also proven effective. Competition in densely populated markets like India has driven operators to innovate through ultra-low pricing, electronic recharges, and technologies to reduce infrastructure costs and expand coverage.